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Why do organisations still struggle to protect our data? We asked 50 professionals on the privacy front line

<a href="https://theconversation.com/profiles/jane-andrew-10314">Jane Andrew</a>, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a>; <a href="https://theconversation.com/profiles/dr-penelope-bowyer-pont-1550191">Dr Penelope Bowyer-Pont</a>, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a>, and <a href="https://theconversation.com/profiles/max-baker-25553">Max Baker</a>, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a> More of our personal data is now collected and stored online than ever before in history. The rise of data breaches should unsettle us all. At an individual level, data breaches can compromise our privacy, cause harm to our finances and mental health, and even enable identity theft. For organisations, the repercussions can be equally severe, often resulting in major financial losses and brand damage. Despite the increasing importance of protecting our personal information, doing so remains fraught with challenges. As part of a <a href="http://www.doi.org/10.25910/psq3-q365">comprehensive study</a> of data breach notification practices, we interviewed 50 senior personnel working in information security and privacy. Here’s what they told us about the multifaceted challenges they face. <h2>What does the law actually say?</h2> Data breaches occur whenever personal information is accessed or disclosed without authorisation, or even lost altogether. <a href="https://www.abc.net.au/news/2024-06-20/optus-hack/104002682">Optus</a>, <a href="https://www.abc.net.au/news/2022-11-09/medibank-data-release-dark-web-hackers/101632088">Medibank</a> and <a href="https://www.afr.com/technology/canva-criticised-after-data-breach-exposed-139m-user-details-20190526-p51r8i">Canva</a> have all experienced high-profile incidents in recent years. Under Australia’s <a href="https://www8.austlii.edu.au/cgi-bin/viewdb/au/legis/cth/consol_act/pa1988108/">privacy laws</a>, organisations aren’t allowed to sweep major cyber attacks under the rug. They have to notify both the regulator – the Office of the Australian Information Commissioner (OAIC) – and any affected individuals of breaches that are likely to result in “<a href="https://www8.austlii.edu.au/cgi-bin/viewdb/au/legis/cth/consol_act/pa1988108/#:%7E:text=Whether%20access%20or%20disclosure%20would%20be%20likely%2C%20or%20would%20not%20be%20likely%2C%20to%20result%20in%20serious%20harm%2D%2Drelevant%20matters%20%C2%A0">serious harm</a>”. But according to the organisational leaders we interviewed, this poses a tricky question. How do you define serious harm? Interpretations of what “serious harm” actually means – and how likely it is to occur – vary significantly. This inconsistency can make it impossible to predict the specific impact of a data breach on an individual. Victims of domestic violence, for example, may be at increased risk when personal information is exposed, creating harms that are difficult to foresee or mitigate. <h2>Enforcing the rules</h2> Interviewees also had concerns about how well the regulator could provide guidance and enforce data protection measures. Many expressed a belief the OAIC is underfunded and lacks the authority to impose and enforce fines properly. The consensus was that the challenge of protecting our data has now outgrown the power and resources of the regulator. As one chief information security officer at a publicly listed company put it: <blockquote> What’s the point of having speeding signs and cameras if you don’t give anyone a ticket? </blockquote> A lack of enforcement can undermine the incentive for organisations to invest in robust data protection. <h2>Only the tip of the iceberg</h2> Data breaches are also underreported, particularly in the corporate sector. One senior cybersecurity consultant from a major multinational company told us there is a strong incentive for companies to minimise or cover up breaches, to avoid embarrassment. This culture means many breaches that should be reported simply aren’t. One senior public servant estimated only about 10% of reportable breaches end up actually being disclosed. Without this basic transparency, the regulator and affected individuals can’t take necessary steps to protect themselves. <h2>Third-party breaches</h2> Sometimes, when we give our personal information to one organisation, it can end up in the hands of another one we might not expect. This is because key tasks – especially managing databases – are often outsourced to third parties. Outsourcing tasks might be a more efficient option for an organisation, but it can make protecting personal data even more complicated. Interviewees told us breaches were more likely when engaging third-party providers, because it limited the control they had over security measures. Between July and December 2023 in Australia, there was an increase of <a href="https://www.oaic.gov.au/privacy/notifiable-data-breaches/notifiable-data-breaches-publications/notifiable-data-breaches-report-july-to-december-2023">more than 300%</a> in third-party data breaches compared to the six months prior. There have been some highly publicised examples. In May this year, many Clubs NSW customers had their personal information potentially <a href="https://www.rimpa.com.au/resource/more-than-a-million-australian-data-records-potentially-exposed-in-nsw-club-and-pub-data-breach.html#:%7E:text=Outabox%2C%20the%20IT%20services%20provider,and%20has%20notified%20law%20enforcement">breached</a> through an attack on third-party software provider Outabox. Bunnings suffered a <a href="https://australiancybersecuritymagazine.com.au/bunnings-customer-data-compromised/">similar breach</a> in late 2021, via an attack on scheduling software provider FlexBooker. <h2>Getting the basics right</h2> Some organisations are still struggling with the basics. Our research found many data breaches occur because outdated or “legacy” data systems are still in use. These systems are old or inactive databases, often containing huge amounts of personal information about all the individuals who’ve previously interacted with them. Organisations tend to hold onto personal data longer than is legally required. This can come down to confusion about data-retention requirements, but also the high cost and complexity of safely decommissioning old systems. One chief privacy officer of a large financial services institution told us: <blockquote> In an organisation like ours where we have over 2,000 legacy systems […] the systems don’t speak to each other. They don’t come with big red delete buttons. </blockquote> Other interviewees flagged that risky data testing practices are widespread. Software developers and tech teams often use “production data” – real customer data – to test new products. This is often quicker and cheaper than creating test datasets. However, this practice exposes real customer information to insecure testing environments, making it more vulnerable. A senior cybersecurity specialist told us: <blockquote> I’ve seen it so much in every industry […] It’s literally live, real information going into systems that are not live and real and have low security. </blockquote> <h2>What needs to be done?</h2> Drawing insights from professionals at the coalface, our study highlights just how complex data protection has become in Australia, and how quickly the landscape is evolving. Addressing these issues will require a multi-pronged approach, including clearer legislative guidelines, better enforcement, greater transparency and robust security practices for the use of third-party providers. As the digital world continues to evolve, so too must our strategies for protecting ourselves and our data.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/236681/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/jane-andrew-10314">Jane Andrew</a>, Professor, Head of the Discipline of Accounting, Governance and Regulation, University of Sydney Business School, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a>; <a href="https://theconversation.com/profiles/dr-penelope-bowyer-pont-1550191">Dr Penelope Bowyer-Pont</a>, Researcher, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a>, and <a href="https://theconversation.com/profiles/max-baker-25553">Max Baker</a>, Associate professor, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/why-do-organisations-still-struggle-to-protect-our-data-we-asked-50-professionals-on-the-privacy-front-line-236681">original article</a>.

Legal

Who dies in a heat wave? How to help protect the vulnerable in our communities

<a href="https://theconversation.com/profiles/myles-david-sergeant-1542267">Myles David Sergeant</a>, <a href="https://theconversation.com/institutions/mcmaster-university-930">McMaster University</a> Extreme heat is a silent killer. From time to time, we hear about shocking cases of <a href="https://www.theguardian.com/world/2023/sep/24/football-player-heat-deaths-athlete">football players</a> and other athletes who die suddenly while exerting themselves on hot days. Those deaths are certainly tragic, but statistically they are very rare. Most deaths from extreme heat <a href="https://www.epa.gov/climate-indicators/climate-change-indicators-heat-related-deaths">are in older people</a>, who frequently die alone inside their homes. They often die slowly, as the heat creeps up to and sometimes past body temperature, especially when heat domes park themselves over cities and keep the temperature high all day and all night. When such deaths happen, they rarely make the news. Of all the climate change disasters our world is already experiencing, heat is the top killer, <a href="https://library.wmo.int/viewer/68500/download?file=1335_WMO-Climate-services-Health_en.pdf&type=pdf&navigator=1">as the World Meteorological Organization reported</a>. The planet was more than <a href="https://www.theguardian.com/environment/article/2024/jul/08/temperatures-1-point-5c-above-pre-industrial-era-average-for-12-months-data-shows">1.5 C above the pre-industrial baseline</a> for 12 consecutive months from July 2023 to June 2024. In July this year, we saw the hottest three days ever on record, prompting <a href="https://www.un.org/sg/en/content/sg/press-encounter/2024-07-25/secretary-generals-press-conference-extreme-heat">a special statement from United Nations Secretary-General Antonio Guterres</a>. <h2>Health risks and heat</h2> <a href="https://www.ncbi.nlm.nih.gov/books/NBK499843/">Our bodies are made to dump excess heat</a> when we are too warm, but that process goes into reverse when the air is warmer than our core temperature. Our other main defence, sweating, doesn’t help when humidity saturates the air, making it impossible for our own moisture to evaporate. For the frail and elderly, who are more likely to be labouring with heart troubles, COPD or other challenges, simply sitting still in a heat wave requires an effort equivalent to walking on a treadmill. The effort is not great, but it is <a href="https://doi.org/10.1016/j.cjco.2021.10.002">steady and relentless</a>. It exhausts the body, sometimes to the <a href="https://doi.org/10.1016/S2542-5196(22)00117-6">point of no return</a>. Tracking heat-related deaths is challenging, and it’s changing as authorities become more aware of heat as a contributing or underlying factor to deaths by other causes. <a href="https://doi.org/10.2105/AJPH.2006.100081">A paper published by the American Journal of Public Health</a> points out that the 1995 heat wave in Chicago likely contributed to hundreds more deaths than had first been attributed to heat itself. <h2>Who is at risk?</h2> Many people lack air conditioning or a way to get to a place that has it, such as a library, recreation centre or shopping mall. As a result, too many people in cities are forced to <a href="https://wmo.int/publication-series/2023-state-of-climate-services-health">endure long waves of heat</a> — waves that are occurring more frequently, lasting longer, and reaching higher temperatures — in a trend that appears set to continue getting worse. Air conditioning, <a href="https://www.lpm.org/news/2015-07-24/the-history-of-movie-theaters-and-air-conditioning-that-keeps-film-lovers-cool">once a luxury that drew people to summertime movie theatres on hot nights</a>, has become a necessity. Increasingly, it is also a legal requirement, as cities pass bylaws requiring landlords not to allow the temperature in their tenants’ quarters to rise above a certain level. Toronto has <a href="https://www.toronto.ca/home/311-toronto-at-your-service/find-service-information/article/?kb=kA06g000001xvbiCAA">such a bylaw</a> for rental units that have air conditioning available, capping indoor temps at 26 C between June 2 and Sept. 14. Such laws recognize the vulnerability of tenants who lack control over the temperature in their rental units, making heat death an especially urban tragedy, as confirmed in <a href="https://www150.statcan.gc.ca/n1/en/pub/82-003-x/2024006/article/00001-eng.pdf?st=e6jLNMuq">a recent Statistics Canada study</a> between 2000 and 2020. Deaths from extreme heat were more likely in cities with a higher percentage of renter households. During a single week-long heat wave in June 2021 — the year after the period captured in the Statistics Canada study — <a href="https://www.cbc.ca/news/canada/british-columbia/bc-heat-dome-sudden-deaths-570-1.6122316">B.C.’s chief coroner found that 570 people died from heat-related causes</a> — 79 per cent of them were seniors. <h2>Taking action at the community level</h2> From this Global North perspective, the community members who are most likely to die from extreme heat included: <ul> <li>Those over 65</li> <li>Those with more than one chronic condition (including hypertension, mental health, diabetes, heart disease, lung disease)</li> <li>Socially disadvantaged populations in our communities</li> <li>Those with mobility issues</li> <li>Those experiencing social isolation (living alone)</li> <li>Tenants with lack of air conditioning</li> <li>Those living in an urban heat island</li> </ul> This problem is not going away. Some of the <a href="https://www.intactcentreclimateadaptation.ca/wp-content/uploads/2022/06/UoW_ICCA_2022_04-Irreversible-Extreme-Heat.pdf">actions we can take</a> to protect our most vulnerable community members include: <ul> <li>Increase awareness that excessive heat is not merely uncomfortable, but dangerous.</li> <li>Make sure people are warned about impending heat waves.</li> <li>Advocate for everyone to have access to air conditioning.</li> <li>Check on and support people who live alone, especially those with no air conditioning.</li> <li>Invite people over if you have air conditioning, or help them get to community cooling stations.</li> <li>Help vulnerable people who do not have air conditioning to improvise, by freezing wet cloths, for example, to take out and hang around their necks. Doing this, especially with a fan blowing, can be surprisingly effective.</li> <li>Learn and share the <a href="https://www.canada.ca/en/health-canada/services/publications/healthy-living/fact-sheet-staying-healthy-heat.html">warning signs of heat-related illness</a>.</li> <li>Make sure they drink plenty of water and other replenishing fluids.</li> </ul> While we must do our best to limit climate change to keep our planet from getting ever hotter, we must also make every effort to protect the vulnerable from the impacts of the heat that is already here.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/236829/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/myles-david-sergeant-1542267">Myles David Sergeant</a>, Assistant Clinical Professor, Department of Family Medicine, <a href="https://theconversation.com/institutions/mcmaster-university-930">McMaster University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/who-dies-in-a-heat-wave-how-to-help-protect-the-vulnerable-in-our-communities-236829">original article</a>.

Caring

Are cats good for our health?

<a href="https://theconversation.com/profiles/susan-hazel-402495">Susan Hazel</a>, <a href="https://theconversation.com/institutions/university-of-adelaide-1119">University of Adelaide</a> Cats have lived with humans for <a href="https://www.nature.com/articles/s41559-017-0202">thousands of years</a>. And <a href="https://www.bbc.com/future/article/20240923-100-year-old-cat-memes-that-predate-the-internet">long before</a> cat memes and viral <a href="https://theconversation.com/tiktok-says-orange-cats-are-dumb-and-tortoiseshell-cats-have-an-attitude-but-how-true-is-that-218033">TikToks</a> took over the internet, they’ve been comforting us with their purrs and making us laugh with their weird antics. But what does the research say – are cats good for us? Living with a cat can have a profound – and sometimes surprising – effect on our physical and mental health. Still, living with cats is not without risks. <h2>Part of the family</h2> You may have heard cats don’t have owners, they have “staff”. In fact, multiple studies show the humans who live with them feel more like beloved relatives. In a <a href="https://www.mdpi.com/1660-4601/19/1/193">study</a> of 1,800 Dutch cat owners, half said their cat was family. One in three viewed their cat as a child or best friend and found them loyal, supportive and empathetic. Another US study developed a “<a href="https://www.frontiersin.org/journals/veterinary-science/articles/10.3389/fvets.2021.812922/full">family bondedness</a>” scale and found cats were just as important a part of families as dogs. Many cats would choose <a href="https://www.sciencedirect.com/science/article/abs/pii/S0376635716303424">human interaction</a> over food or toys. And <a href="https://link.springer.com/article/10.1007/s10071-022-01674-w">they can distinguish</a> when we are talking to them (rather than another human). In fact we’ve adapted to each other. Cats are <a href="https://www.nature.com/articles/s41598-020-73426-0">more likely</a> to approach human strangers who first give a “kitty kiss” – narrowing your eyes and blinking slowly. And research suggests cats have developed <a href="https://theconversation.com/why-cats-meow-at-humans-more-than-each-other-232865">specific meows</a> that tune into our nurturing instincts. What does this close relationship mean for health outcomes? <h2>A sense of purpose</h2> Owning a pet is associated with <a href="https://link.springer.com/article/10.1007/s00127-022-02332-9">less social isolation</a>. And <a href="https://www.cabidigitallibrary.org/doi/full/10.1079/hai.2021.0006">some cat owners</a> say “providing for the cat” increases their feelings of enjoyment and sense of purpose. But the benefits of the relationship may depend on how you relate to your cat. <a href="https://www.mdpi.com/2076-2615/11/6/1601">One study</a> looked at different relationship styles between humans and cats, including “remote”, “casual” and “co-dependent”. It found people whose relationship with their cat was co-dependent or like a friend had a higher emotional connection to their pet. <h2>Links to heart health</h2> People who own – or have owned – a cat have a <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3317329/">lower risk</a> of dying from cardiovascular diseases such as stroke or heart disease. This result has been repeated in several <a href="https://journals.lww.com/jcardiovascularmedicine/fulltext/2020/05000/association_between_pet_ownership_and.3.aspx?casa_token=JmAlt8nNRAUAAAAA:NdUb0DK3DF6Fej0Vrx9t55JK-HZPmE7F1teQeDCCt3vy0Ha3aSNwZeA4KMcTVm-4ZWz1n-rEVUhIE62CUcfXhAn0sA5RQg">studies</a>. However a problem interpreting population studies is they only tell us about an association. This means while people with cats have lower risk of dying from cardiovascular diseases, we can’t say for sure cats are the cause. Cat ownership has also been associated with some positive changes in the <a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0253133">gut microbiota</a>, especially in women, such as improved blood glucose control and reduced inflammation. <h2>Helping mental health</h2> Having cat or dog is also associated with <a href="https://www.tandfonline.com/doi/full/10.1080/08927936.2023.2182029">higher psychological well-being</a>. For people with depression, patting or playing with their cat <a href="https://www.tandfonline.com/doi/abs/10.2752/089279399787000066">has been shown</a> to reduce symptoms (although this was over a short, two-hour period and can’t be extrapolated longer-term). Another way to find out about the health impact of cats is qualitative research: asking people what their cats mean to them, beyond the numbers. When colleagues and I <a href="https://www.cabidigitallibrary.org/doi/full/10.1079/hai.2023.0013">surveyed veterans</a>, we found people more attached to their pets actually had poorer mental health scores. But their survey responses told a different story. One respondent said, “my cats are the reason I get up in the morning”. Another wrote: <blockquote> I consider my pet to be a service animal. My cat helps me to relax when I’m dealing with my anxiety, depression or when I wake during the night from the frequent nightmares I have. My cat isn’t just a pet to me, my cat is a part of me, my cat is part of my family. </blockquote> It may be that veterans were more attached to their cats because they had worse mental health – and relied on their cats more for comfort – rather than the other way around. <h2>Mental health downsides</h2> It is possible being attached to your cat has downsides. If your cat becomes sick, the burden of caring for them may have a negative impact on your mental health. <a href="https://bvajournals.onlinelibrary.wiley.com/doi/abs/10.1002/vetr.836?casa_token=g2tT-K2uFUcAAAAA%3AkxrkxlT5voEB8-GpKtiY2pX8qCDgFMjqDZPNS5L2AavYLAlfs6CG_wtsICp7bv-a3TtPMclLHl8edNE">In our study</a> of owners whose cats had epilepsy, around one third experienced a clinical level of burden as caregivers that was likely to interfere with their day-to-day functioning. <h2>Toxoplasmosis</h2> Cats can also carry <a href="https://www.who.int/news-room/fact-sheets/detail/zoonoses">zoonotic</a> diseases, which are infections which spread from animals to humans. They are the main host for <a href="https://www.vet.cornell.edu/departments-centers-and-institutes/cornell-feline-health-center/health-information/feline-health-topics/toxoplasmosis-cats">toxoplasmosis</a>, a parasite excreted in cat faeces which can affect other mammals, including humans. The parasite is more likely to be carried by <a href="https://www.sciencedirect.com/science/article/pii/S0304401720301254?casa_token=hp10VTR-NcEAAAAA:SHRRFC7kULN2idlaOttl6VKIaH2FSSNtM6SMEzW3kK8EeZsUZNYSNcNd16Y8Sm8oItsPE9TTpdk">feral cats</a> that hunt for their food than domestic cats. Most people have <a href="https://link.springer.com/article/10.1186/s13071-021-04769-4">mild symptoms</a> that may be similar to flu. But <a href="https://www.healthdirect.gov.au/toxoplasmosis">infection during pregnancy</a> can lead to miscarriage or stillbirth, or cause problems for the baby including blindness and seizures. Pregnant women and people with lowered immunity are <a href="https://www.healthdirect.gov.au/toxoplasmosis">most at risk</a>. It is recommended these groups don’t empty cat litter trays, or use gloves if they have to. Changing the litter tray daily prevents the parasite <a href="https://www.cdc.gov/dpdx/toxoplasmosis/index.html#:%7E:text=Life%20Cycle&text=Unsporulated%20oocysts%20are%20shed%20in,the%20environment%20and%20become%20infective.">reaching a stage</a> that could infect people. <h2>Allergies</h2> Up to one in five people have an <a href="https://theconversation.com/do-hypoallergenic-cats-even-exist-3-myths-dispelled-about-cat-allergies-191662">allergy to cats</a> and this is increasing. When cats lick their fur, their saliva deposits an allergen. When their fur and <a href="https://my.clevelandclinic.org/health/diseases/17702-pet-allergies">dander</a> (flakes of skin) come loose, it can set off an allergic reaction. People without severe allergies can still live with cats if they regularly wash their hands, clean surfaces and vacuum to eliminate dander. They can also exclude cats from areas they want to be allergen-free, such as bedrooms. While cats can provoke allergic reactions, <a href="https://journals.sagepub.com/doi/full/10.1177/1945892420932487?casa_token=0H_y7qS3NMwAAAAA%3A3dIpa1GNTqFWXHgszpVm7JzcVkmb4EHpE8IEXtlnK1VtMGGH-FkKvMcO5uc1JjTdzC6Q-7RR9UP-ZQ">there is also evidence</a> contact with cats can have a protective role in preventing asthma and allergic reactions developing. This is because exposure may modify the immune system, making it less likely allergic reactions will occur.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/238993/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/susan-hazel-402495">Susan Hazel</a>, Associate Professor, School of Animal and Veterinary Science, <a href="https://theconversation.com/institutions/university-of-adelaide-1119">University of Adelaide</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/are-cats-good-for-our-health-238993">original article</a>.

Family & Pets

Eight simple changes to our neighbourhoods can help us age well

<a href="https://theconversation.com/profiles/jerome-n-rachele-251972">Jerome N Rachele</a>, <a href="https://theconversation.com/institutions/australian-catholic-university-747">Australian Catholic University</a>; <a href="https://theconversation.com/profiles/james-f-sallis-407885">James F Sallis</a>, <a href="https://theconversation.com/institutions/university-of-california-san-diego-1314">University of California, San Diego</a>, and <a href="https://theconversation.com/profiles/venurs-loh-118864">Venurs Loh</a>, <a href="https://theconversation.com/institutions/australian-catholic-university-747">Australian Catholic University</a> Where we live can play a big part in ageing well, largely because of the links between physical activity and wellbeing. <a href="https://www.ahuri.edu.au/__data/assets/pdf_file/0012/2181/AHURI_Final_Report_No214_Downsizing-amongst-older-Australians.pdf">Research shows</a> that two-thirds of Australians prefer to age in place. That is, we want to live independently in our homes for as long as we can. Our neighbourhoods and their design can then improve or hinder our ability to get out of the house and be physically active. The rapid ageing of Australia’s population only adds to the importance of neighbourhood design. In 2016, 15% of Australians were aged 65 or older. That proportion is <a href="https://www.aihw.gov.au/reports-statistics/population-groups/older-people/overview">projected to double</a> by 2056. These trends present several <a href="https://www.aihw.gov.au/reports-statistics/population-groups/older-people/reports">social and economic challenges</a>, particularly for the health sector. Designing neighbourhoods in ways that promote physical activity can help overcome these challenges. <h2>Eight simple steps</h2> The following is a short list of <a href="https://ijbnpa.biomedcentral.com/articles/10.1186/s12966-017-0471-5">evidence-based steps</a> local and state governments can take to assist older people to be physically active. These involve minor but effective changes to neighbourhood design. Improve footpaths: Research indicates that older people have a <a href="https://theconversation.com/why-older-people-get-osteoporosis-and-have-falls-68145">higher risk of falls</a>. Ensuring footpaths are level and crack-free, and free from obstructions, will encourage walking among older people – especially those with a disability. Connected pedestrian networks: Introducing footpaths at the end of no-through-roads and across long street blocks reduces walking distances to destinations. This makes walking a more viable option. Slowing traffic in high-pedestrian areas: Slowing traffic <a href="https://www.heartfoundation.org.au/images/uploads/publications/Safe-Speed-Evidence-Report.pdf">improves safety</a> by reducing the risk of a collision. It also reduces the risk of <a href="https://www.ncbi.nlm.nih.gov/pubmed/28557669">death and serious injury</a> in the event of a collision. Age-friendly street crossings: Installing longer pedestrian crossing light sequences gives older pedestrians <a href="https://academic.oup.com/ageing/article/41/5/690/47318/Most-older-pedestrians-are-unable-to-cross-the">more time to cross</a>, and installing refuge islands means those who walk more slowly can cross the street in two stages. Disabled access at public transport: Although a form of motorised transport, public transport users undertake more incidental physical activity compared with car users. This is because they walk between transit stops and their origins and destinations. Improving disabled access helps make public transport a viable option for more older people. Places to rest: <a href="https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-13-1054">Providing rest spots</a> such as benches enables older people to break up their walk and rest when needed. Planting trees: Planting trees <a href="http://www.sciencedirect.com/science/article/pii/S0277953614004109?via%3Dihub">creates more pleasant scenery</a> to enjoy on a walk. It also provides shade on hot days. Improving safety: Ensuring that streets are well-lit and reducing graffiti and signs of decay are likely to <a href="https://www.ncbi.nlm.nih.gov/pubmed/24552845">improve perceptions of safety</a> among older people. <h2>Why physical activity matters</h2> Physical function – the ability to undertake everyday activities such as walking, bathing and climbing stairs – often declines as people age. The reason for this is that ageing is often accompanied by a reduction in muscle strength, flexibility and cardiorespiratory reserves. Regular physical activity can <a href="https://www.ncbi.nlm.nih.gov/pubmed/14552936">prevent or slow the decline</a> in physical function, even among those with existing health conditions. Middle-to-older aged adults can reduce their risk of physical function decline <a href="https://ijbnpa.biomedcentral.com/articles/10.1186/1479-5868-7-38">by 30%</a> with regular physical activity (at least 150 minutes per week). This includes recreational physical activity, like walking the dog, or incidental physical activity, such as walking to the shops or to visit friends. By making minor changes as outlined above, the health and longevity of our elderly population can be extended. Such changes will help our elderly age well in place. <a href="https://theconversation.com/profiles/jerome-n-rachele-251972">Jerome N Rachele</a>, Research Fellow in Social Epidemiology, Institute for Health and Ageing, <a href="https://theconversation.com/institutions/australian-catholic-university-747">Australian Catholic University</a>; <a href="https://theconversation.com/profiles/james-f-sallis-407885">James F Sallis</a>, Professorial Fellow, Institute for Health and Ageing, Australian Catholic University, and Emeritus Professor, Department of Family Medicine and Public Health, <a href="https://theconversation.com/institutions/university-of-california-san-diego-1314">University of California, San Diego</a>, and <a href="https://theconversation.com/profiles/venurs-loh-118864">Venurs Loh</a>, PhD Candidate, Institute for Health and Ageing, <a href="https://theconversation.com/institutions/australian-catholic-university-747">Australian Catholic University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/eight-simple-changes-to-our-neighbourhoods-can-help-us-age-well-83962">original article</a>.

Travel Tips

We tend to underestimate our future expenses – here’s one way to prevent that

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/ray-charles-chuck-howard-1361224">Ray Charles "Chuck" Howard</a>, <a href="https://theconversation.com/institutions/texas-aandm-university-1672">Texas A&M University</a>; <a href="https://theconversation.com/profiles/abigail-sussman-227057">Abigail Sussman</a>, <a href="https://theconversation.com/institutions/university-of-chicago-952">University of Chicago</a>; <a href="https://theconversation.com/profiles/david-j-hardisty-753777">David J. Hardisty</a>, <a href="https://theconversation.com/institutions/university-of-british-columbia-946">University of British Columbia</a>, and <a href="https://theconversation.com/profiles/marcel-lukas-1236384">Marcel Lukas</a>, <a href="https://theconversation.com/institutions/university-of-st-andrews-1280">University of St Andrews</a> <h2>The big idea</h2> When asked to estimate how much money they would spend in the future, people underpredicted the total amount by more than C$400 per month. However, when prompted to think about unexpected spending in addition to typical expenses, people made much more accurate predictions. These are the main findings of a series of <a href="https://doi.org/10.1177%2F00222437211068025">studies and experiments that we conducted</a> and which have just been published in the <a href="https://journals.sagepub.com/home/mrj">Journal of Marketing Research</a>. In our first study, we began by asking 187 members of a Canadian credit union to predict their weekly spending for the next five weeks. Then, at the end of each week, we asked them how much they actually spent. For the first four weeks, people underpredicted their weekly spending by about $100 per week or $400 for the month. In the study’s fifth and final week, we ran an experiment to see if we could improve people’s prediction accuracy. Specifically, we randomly assigned participants to one of two groups. In group one, participants estimated their spending for the next week just as they had done in previous weeks. These folks once again significantly underpredicted their spending. In group two, participants were asked to think of three reasons why their spending for the next week might be different than usual before making their estimate. This led them to make higher and much more accurate predictions – coming within just $7 of what they actually spent. Importantly, participants in each group spent roughly the same amount of money that week, on average. The only difference between the two groups was whether they accurately predicted that amount. <iframe id="WlDv3" class="tc-infographic-datawrapper" style="border: 0;" src="https://datawrapper.dwcdn.net/WlDv3/3/" width="100%" height="400px" frameborder="0" scrolling="no"></iframe> Next, we conducted nine experiments to better understand why people underpredict their spending and whether being prompted to think of unusual expenses helps improve accuracy. In all, over 5,800 people participated in these experiments, including a representative sample of U.S. residents. These experiments revealed two important insights. First, people primarily base their spending predictions on typical expenses like groceries, gasoline and rent. They usually fail to account for irregular – though still common – expenses like car repairs, last-minute concert tickets or one-off health care bills. This is what leads to underprediction. Second, prompting people to think of irregular expenses in addition to typical expenses helps them to make more accurate spending predictions. In our studies, people did not factor in atypical expenses unless we asked them to do so. <h2>Why it matters</h2> Helping people improve the accuracy of their spending predictions could help them improve their financial well-being. Underpredicting expenses can be costly. For example, 12 million Americans <a href="https://www.pewtrusts.org/en/research-and-analysis/reports/2012/07/19/who-borrows-where-they-borrow-and-why">borrow a total of more than $7 billion</a> in payday loans each year because they can’t meet their monthly expenses. These loans typically have extremely high interest rates – <a href="https://www.pewtrusts.org/en/research-and-analysis/data-visualizations/2022/how-well-does-your-state-protect-payday-loan-borrowers">more than 250% in some states</a>. Payday loans also come due in full so quickly that around three in four borrowers <a href="https://www.pewtrusts.org/en/research-and-analysis/reports/2012/07/19/who-borrows-where-they-borrow-and-why">end up borrowing again</a> to pay off the original loan. If consumers could better anticipate how much money they will spend in the future, it might help motivate them to spend less and save more in the present. In fact, one of our studies shows that our suggested prediction strategy <a href="https://doi.org/10.1177/0022243721106802">not only boosted spending estimates</a>, it also increased intentions to save. <h2>What’s next</h2> Members of our research team are currently investigating if, when and why underpredicting one’s expenses may be beneficial. For example, if a person sets an optimistically low budget and actively tracks their spending against it, does that help them reduce their spending? We are also investigating whether people who work in the gig economy show a corresponding tendency to mispredict their future income.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/189100/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/ray-charles-chuck-howard-1361224">Ray Charles "Chuck" Howard</a>, Assistant Professor of Marketing, <a href="https://theconversation.com/institutions/texas-aandm-university-1672">Texas A&M University</a>; <a href="https://theconversation.com/profiles/abigail-sussman-227057">Abigail Sussman</a>, Professor of Marketing, <a href="https://theconversation.com/institutions/university-of-chicago-952">University of Chicago</a>; <a href="https://theconversation.com/profiles/david-j-hardisty-753777">David J. Hardisty</a>, Assistant Professor of Marketing & Behavioral Science, <a href="https://theconversation.com/institutions/university-of-british-columbia-946">University of British Columbia</a>, and <a href="https://theconversation.com/profiles/marcel-lukas-1236384">Marcel Lukas</a>, Lecturer in Banking and Finance, <a href="https://theconversation.com/institutions/university-of-st-andrews-1280">University of St Andrews</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/we-tend-to-underestimate-our-future-expenses-heres-one-way-to-prevent-that-189100">original article</a>. </div>

Money & Banking

Iconic Days of Our Lives star dies aged 70

Drake Hogestyn has passed away aged 70. The Days of Our Lives actor, known for his long-running role as John Black passed away on Saturday after a battle with pancreatic cancer, according to a statement shared by his family on Instagram. “It’s with heavy hearts that we announce the passing of Drake Hogestyn,” the statement began. “He was thrown the curve ball of his life when he was diagnosed with pancreatic cancer, but he faced the challenge with incredible strength and determination.” “After putting up an unbelievable fight, he passed peacefully surrounded by loved ones. He was the most amazing husband, father, papa and actor. He loved performing for the ‘Days’ audience and sharing the stage with the greatest cast, crew, and production team in the business. We love him and we will miss him all the Days of our Lives.” Hogestyn first appeared on the iconic US soap opera in 1986, and played John Black for 38 years. In a statement to Soap Opera Digest, Days Of Our Lives executive producer Ken Corday remembered the actor, who appeared in more than 4,200 episodes of the show. “This is a very difficult one for all of us,” he said. “Hogey was the ultimate team player and there are not sufficient words to express how deeply he will be missed. His impact on our show, personally and professionally, was profound and will forever remain unmatched.” His co-stars and colleagues have also paid their respects on social media. “I’m so saddened by this news,” tweeted Kassie DePaiva, who played Eve on the soap. “One of the kindest people I have ever worked with. What an amazing life he lived. He will be missed. He made the world a better place.” Fellow veteran soap star Nancy Lee Grahn, who plays Alexis on General Hospital tweeted: “My deepest condolences to Drake Hogestyn’s family, friends and fans. What a lovely, lovely gracious man.” Image: SplashNews.com/ Shutterstock Editorial

Caring

Why are we seeing more pandemics? Our impact on the planet has a lot to do with it

<a href="https://theconversation.com/profiles/olga-anikeeva-1522907">Olga Anikeeva</a>, <a href="https://theconversation.com/institutions/university-of-adelaide-1119">University of Adelaide</a>; <a href="https://theconversation.com/profiles/jessica-stanhope-1129888">Jessica Stanhope</a>, <a href="https://theconversation.com/institutions/university-of-adelaide-1119">University of Adelaide</a>; <a href="https://theconversation.com/profiles/peng-bi-1522908">Peng Bi</a>, <a href="https://theconversation.com/institutions/university-of-adelaide-1119">University of Adelaide</a>, and <a href="https://theconversation.com/profiles/philip-weinstein-882901">Philip Weinstein</a>, <a href="https://theconversation.com/institutions/university-of-adelaide-1119">University of Adelaide</a> Pandemics – the global spread of infectious diseases – seem to be making a comeback. In the Middle Ages we had the Black Death (plague), and after the first world war we had the Spanish flu. Tens of millions of people <a href="https://assets.cureus.com/uploads/review_article/pdf/69273/20211019-25919-an4y6h.pdf">died from these diseases</a>. Then science began to <a href="https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2011.00053/full">get the upper hand</a>, with vaccination eradicating smallpox, and polio nearly so. Antibiotics became available to treat bacterial infections, and more recently antivirals as well. But in recent years and decades pandemics <a href="https://assets.cureus.com/uploads/review_article/pdf/69273/20211019-25919-an4y6h.pdf">seem to be returning</a>. In the 1980s we had HIV/AIDS, then several flu pandemics, SARS, and now COVID (no, COVID isn’t over). So why is this happening, and is there anything we can do to avert future pandemics? <h2>Unbalanced ecosystems</h2> Healthy, stable ecosystems provide services that keep us healthy, such as supplying food and clean water, producing oxygen, and making green spaces available for our <a href="https://www.millenniumassessment.org/documents/document.356.aspx.pdf">recreation and wellbeing</a>. Another key service ecosystems provide is disease regulation. When nature is in balance – with predators controlling herbivore populations, and herbivores controlling plant growth – it’s more difficult for pathogens to emerge in a way that causes pandemics. But when human activities <a href="https://books.google.com.au/books?hl=en&lr=&id=rWozz12K1aUC&oi=fnd&pg=PP15&dq=planetary+overload&ots=c9mWuESUXN&sig=-1iP3uSOWazvC2OFLk4vginWbQQ&redir_esc=y#v=onepage&q=planetary%20overload&f=false">disrupt and unbalance ecosystems</a> – such as by way of climate change and biodiversity loss – <a href="https://academic.oup.com/bioscience/article/58/8/756/381265">things go wrong</a>. For example, climate change affects the number and distribution of plants and animals. Mosquitoes that carry diseases can move from the tropics into what used to be temperate climates as the planet warms, and may infect more people in the months that are normally disease free. We’ve studied the relationship between weather and dengue fever transmission in China, and <a href="https://pubmed.ncbi.nlm.nih.gov/27883970/">our findings</a> support the same conclusion reached by <a href="https://journals.plos.org/plosntds/article?id=10.1371/journal.pntd.0008118">many other studies</a>: climate change is likely to put more people at risk of dengue. Biodiversity loss can have similar effects by disrupting food chains. When ranchers cleared forests in <a href="https://www.mdpi.com/1999-4915/6/5/1911">South America</a> for their cattle to graze in the first half of the 20th century, tiny forest-dwelling, blood-feeding vampire bats suddenly had a smörgåsbord of large sedentary animals to feed on. While vampire bats had previously been kept in check by the limited availability of food and the presence of predators in the balanced <a href="https://cir.nii.ac.jp/crid/1130000797648461952">forest ecosystem</a>, numbers of this species exploded in South America. These bats carry the rabies virus, which causes <a href="https://www.who.int/news-room/fact-sheets/detail/rabies">lethal brain infections</a> in people who are bitten. Although the number of deaths from bat-borne rabies has now fallen dramatically due to vaccination programs in South America, rabies caused by bites from other animals still <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3168224/">poses a global threat</a>. As urban and agricultural development impinges on natural ecosystems, there are increasing opportunities for humans and domestic animals to become infected with pathogens that would normally only be seen in wildlife – particularly when people hunt and eat animals from the wild. The HIV virus, for example, <a href="https://www.tandfonline.com/doi/abs/10.1076/jmep.27.2.163.2992">first entered human populations</a> from apes that were slaughtered for food in Africa, and then spread globally through travel and trade. Meanwhile, bats are thought to be <a href="https://www.sciencedirect.com/science/article/pii/S0006291X20319434">the original reservoir</a> for the virus that caused the COVID pandemic, which has killed more than <a href="https://www.worldometers.info/coronavirus/">7 million people</a> to date. Ultimately, until we effectively address the unsustainable impact we are having on our planet, pandemics will continue to occur. <h2>Targeting the ultimate causes</h2> Factors such as climate change, biodiversity loss and other global challenges are the ultimate (high level) cause of pandemics. Meanwhile, increased contact between humans, domestic animals and wildlife is the proximate (immediate) cause. In the case of HIV, while direct contact with the infected blood of apes was the proximate cause, the apes were only being slaughtered because large numbers of very poor people were hungry – an ultimate cause. The distinction between <a href="https://link.springer.com/article/10.1007/BF02207379">ultimate causes and proximate causes</a> is important, because we often deal only with proximate causes. For example, people may smoke because of stress or social pressure (ultimate causes of getting lung cancer), but it’s the toxins in the smoke that cause cancer (proximate cause). Generally, health services are only concerned with stopping people from smoking – and with treating the illness that results – not with removing the drivers that lead them to smoke in the first place. Similarly, we address pandemics with lockdowns, mask wearing, social distancing and vaccinations – all measures which seek to stop the spread of the virus. But we pay less attention to addressing the ultimate causes of pandemics – until perhaps very recently. <h2>A planetary health approach</h2> There’s a growing awareness of the importance of adopting a “planetary health” approach to improve human health. This <a href="https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(15)60901-1/fulltext?nr_email_referer=1">concept</a> is based on the understanding that human health and human civilisation depend on flourishing natural systems, and the wise stewardship of those natural systems. With this approach, ultimate drivers like climate change and biodiversity loss would be prioritised in preventing future pandemics, at the same time as working with experts from many different disciplines to deal with the proximate causes, thereby reducing the risk overall. The planetary health approach has the benefit of improving both the health of the environment and human health concurrently. We are heartened by the increased uptake of teaching planetary health concepts across the environmental sciences, humanities and health sciences in many universities. As climate change, biodiversity loss, population displacements, travel and trade continue to increase the risk of disease outbreaks, it’s vital that the planetary stewards of the future have a better understanding of how to tackle the ultimate causes that drive pandemics. This article is the first in a series on the next pandemic.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/226827/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/olga-anikeeva-1522907">Olga Anikeeva</a>, Research Fellow, School of Public Health, <a href="https://theconversation.com/institutions/university-of-adelaide-1119">University of Adelaide</a>; <a href="https://theconversation.com/profiles/jessica-stanhope-1129888">Jessica Stanhope</a>, Lecturer, School of Allied Health Science and Practice, <a href="https://theconversation.com/institutions/university-of-adelaide-1119">University of Adelaide</a>; <a href="https://theconversation.com/profiles/peng-bi-1522908">Peng Bi</a>, Professor, School of Public Health, <a href="https://theconversation.com/institutions/university-of-adelaide-1119">University of Adelaide</a>, and <a href="https://theconversation.com/profiles/philip-weinstein-882901">Philip Weinstein</a>, Professorial Research Fellow, School of Public Health, <a href="https://theconversation.com/institutions/university-of-adelaide-1119">University of Adelaide</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/why-are-we-seeing-more-pandemics-our-impact-on-the-planet-has-a-lot-to-do-with-it-226827">original article</a>.

Body

Does intermittent fasting increase or decrease our risk of cancer?

<a href="https://theconversation.com/profiles/amali-cooray-1482458">Amali Cooray</a>, <a href="https://theconversation.com/institutions/wehi-walter-and-eliza-hall-institute-of-medical-research-822">WEHI (Walter and Eliza Hall Institute of Medical Research)</a> Research over the years has suggested intermittent fasting has the potential to improve our health and <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3946160/">reduce the likelihood</a> of developing cancer. So what should we make of a <a href="https://www.nature.com/articles/s41586-024-07840-z">new study</a> in mice suggesting fasting increases the risk of cancer? <h2>What is intermittent fasting?</h2> Intermittent fasting means switching between times of eating and not eating. Unlike traditional diets that focus on what to eat, this approach focuses on when to eat. There are lots of commonly used <a href="https://dietitiansaustralia.org.au/health-advice/intermittent-fasting">intermittent fasting schedules</a>. The 16/8 plan means you only eat within an eight-hour window, then fast for the remaining 16 hours. Another popular option is the 5:2 diet, where you eat normally for five days then restrict calories for two days. In Australia, poor diet contributes to <a href="https://www.health.gov.au/topics/food-and-nutrition/what-were-doing">7% of all cases of disease</a>, including coronary heart disease, stroke, type 2 diabetes, and cancers of the bowel and lung. Globally, poor diet is linked to <a href="https://www.thelancet.com/article/S0140-6736(19)30041-8/fulltext">22% of deaths</a> in adults over the age of 25. Intermittent fasting has gained a lot of attention in recent years for its potential health benefits. Fasting <a href="https://www.betterhealth.vic.gov.au/health/conditionsandtreatments/metabolism">influences metabolism</a>, which is how your body processes food and energy. It can affect how the body absorbs nutrients from food and burns energy from sugar and fat. <h2>What did the new study find?</h2> The <a href="https://www.nature.com/articles/s41586-024-07840-z">new study</a>, published in Nature, found when mice ate again after fasting, their <a href="https://www.nature.com/articles/s12276-024-01179-1">gut stem cells</a>, which help repair the intestine, became more active. The stem cells were better at regenerating compared with those of mice who were either totally fasting or eating normally. This suggests the body might be better at healing itself when eating after fasting. However, this could also have a downside. If there are <a href="https://www.cancer.gov/about-cancer/causes-prevention/genetics/genetic-changes-infographic">genetic mutations</a> present, the burst of stem cell-driven regeneration after eating again might make it easier for cancer to develop. <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4027058/">Polyamines</a> – small molecules important for cell growth – drive this regeneration after refeeding. These polyamines can be produced by the body, influenced by diet, or come from gut bacteria. The findings suggest that while fasting and refeeding can improve stem cell function and regeneration, there might be a tradeoff with an increased risk of cancer, especially if fasting and refeeding cycles are repeated over time. While this has been shown in mice, the link between intermittent fasting and cancer risk in humans is more complicated and not yet fully understood. <h2>What has other research found?</h2> <a href="https://www.annualreviews.org/content/journals/10.1146/annurev-nutr-071816-064634">Studies in animals</a> have found intermittent fasting can help with weight loss, improve blood pressure and blood sugar levels, and subsequently <a href="https://pubmed.ncbi.nlm.nih.gov/27810402/">reduce the risks</a> of diabetes and heart disease. Research in humans <a href="https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2811116">suggests</a> intermittent fasting can reduce body weight, improve <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9361187/">metabolic health</a>, reduce inflammation, and enhance <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3946160/">cellular repair processes</a>, which remove damaged cells that could potentially turn cancerous. However, other studies warn that the benefits of intermittent fasting are the same as what can be achieved through <a href="https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/2623528">calorie restriction</a>, and that there <a href="https://www.sciencedirect.com/science/article/pii/S2161831322007542">isn’t enough evidence</a> to confirm it reduces cancer risk in humans. <h2>What about in people with cancer?</h2> In studies of people who have cancer, fasting has been <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2815756/">reported to</a> protect against the side effects of chemotherapy and <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7311547/">improve the effectiveness</a> of cancer treatments, while decreasing damage to healthy cells. Prolonged fasting in some patients who have cancer has been shown to be safe and <a href="https://pubmed.ncbi.nlm.nih.gov/34383300/">may potentially</a> be able to decrease tumour growth. On the other hand, some experts advise caution. Studies in mice show intermittent fasting could <a href="https://www.nature.com/articles/s41423-023-01033-w">weaken the immune system</a> and make the body less able to fight infection, potentially leading to worse health outcomes in people who are unwell. However, there is <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8757987/">currently no evidence</a> that fasting increases the risk of bacterial infections in humans. <h2>So is it OK to try intermittent fasting?</h2> The current view on intermittent fasting is that it can be beneficial, but experts agree more research is needed. Short-term benefits such as weight loss and better overall health are well supported. But we don’t fully understand the long-term effects, especially when it comes to cancer risk and other immune-related issues. Since there are many different methods of intermittent fasting and people react to them differently, it’s hard to <a href="https://www.nature.com/articles/s41423-023-01033-w">give advice that works for everyone</a>. And because most people who participated in the studies were overweight, or had diabetes or other health problems, we don’t know how the results apply to the broader population. For healthy people, intermittent fasting is generally considered safe. But it’s <a href="https://dietitiansaustralia.org.au/health-advice/intermittent-fasting">not suitable for everyone</a>, particularly those with certain medical conditions, pregnant or breastfeeding women, and people with a history of eating disorders. So consult your health-care provider before starting any fasting program.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/238071/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/amali-cooray-1482458">Amali Cooray</a>, PhD Candidate in Genetic Engineering and Cancer, <a href="https://theconversation.com/institutions/wehi-walter-and-eliza-hall-institute-of-medical-research-822">WEHI (Walter and Eliza Hall Institute of Medical Research)</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/does-intermittent-fasting-increase-or-decrease-our-risk-of-cancer-238071">original article</a>.

Body

Food and exercise can treat depression as well as a psychologist, our study found. And it’s cheaper

<a href="https://theconversation.com/profiles/adrienne-oneil-268324">Adrienne O'Neil</a>, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a> and <a href="https://theconversation.com/profiles/sophie-mahoney-1557294">Sophie Mahoney</a>, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a> Around <a href="https://www.aihw.gov.au/getmedia/6b19e493-0ebe-420f-a9a3-e48b26aace9f/aihw-aus-249-ib.pdf?v=20240628145747&inline=true">3.2 million</a> Australians live with depression. At the same time, <a href="https://www.aihw.gov.au/getmedia/6b19e493-0ebe-420f-a9a3-e48b26aace9f/aihw-aus-249-ib.pdf?v=20240628145747&inline=true">few</a> Australians meet recommended dietary or physical activity guidelines. What has one got to do with the other? Our world-first trial, <a href="https://www.thelancet.com/journals/lanwpc/article/PIIS2666-6065%2824%2900136-6/fulltext">published this week</a>, shows improving diet and doing more physical activity can be as effective as therapy with a psychologist for treating low-grade depression. Previous studies (including <a href="https://link.springer.com/article/10.1186/s12916-017-0791-y">our own</a>) have found “lifestyle” therapies are effective for depression. But they have never been directly compared with psychological therapies – until now. Amid a nation-wide <a href="https://www.health.gov.au/sites/default/files/2023-10/national-mental-health-workforce-strategy-2022-2032.pdf">shortage</a> of mental health professionals, our research points to a potential solution. As we found lifestyle counselling was as effective as psychological therapy, our findings suggest dietitians and exercise physiologists may one day play a role in managing depression. <h2>What did our study measure?</h2> During the prolonged COVID lockdowns, Victorians’ distress levels were <a href="https://onlinelibrary.wiley.com/doi/full/10.5694/mja2.50831">high and widespread</a>. Face-to-face mental health services were limited. Our trial targeted people living in Victoria with elevated distress, meaning at least mild depression but not necessarily a diagnosed mental disorder. Typical symptoms included feeling down, hopeless, irritable or tearful. We partnered with our <a href="https://www.barwonhealth.org.au/mhdas/">local mental health service</a> to recruit 182 adults and provided group-based sessions on Zoom. All participants took part in up to six sessions over eight weeks, facilitated by health professionals. Half were randomly assigned to participate in a program co-facilitated by an accredited practising dietitian and an exercise physiologist. That group – called the lifestyle program – developed nutrition and movement goals: <ul> <li>eating a wide variety of foods</li> <li>choosing high-fibre plant foods</li> <li>including high quality fats</li> <li>limiting discretionary foods, such as those high in saturated fats and added sugars</li> <li>doing enjoyable physical activity.</li> </ul> The second group took part in psychotherapy sessions convened by two psychologists. The psychotherapy program used cognitive behavioural therapy (CBT), the gold standard for treating depression in <a href="https://jamanetwork.com/journals/jamapsychiatry/article-abstract/2730724">groups and when delivered remotely</a>. In both groups, participants could continue existing treatments (such as taking antidepressant medication). We gave both groups <a href="https://link.springer.com/article/10.1186/s12888-022-03840-3">workbooks and hampers</a>. The lifestyle group received a food hamper, while the psychotherapy group received items such as a colouring book, stress ball and head massager. <h2>Lifestyle therapies just as effective</h2> We found similar results in each program. At the trial’s beginning we gave each participant a score based on their self-reported mental health. We measured them again at the end of the program. Over eight weeks, those scores showed symptoms of depression reduced for participants in the lifestyle program (42%) and the psychotherapy program (37%). That difference was not statistically or clinically meaningful so we could conclude both treatments were as good as each other. There were some differences between groups. People in the lifestyle program improved their diet, while those in the psychotherapy program felt they had increased their social support – meaning how connected they felt to other people – compared to at the start of the treatment. Participants in both programs increased their physical activity. While this was expected for those in the lifestyle program, it was less expected for those in the psychotherapy program. It may be because they knew they were enrolled in a research study about lifestyle and subconsciously changed their activity patterns, or it could be a positive by-product of doing psychotherapy. There was also not much difference in cost. The lifestyle program was slightly cheaper to deliver: A$482 per participant, versus $503 for psychotherapy. That’s because hourly rates differ between dietitians and exercise physiologists, and psychologists. <h2>What does this mean for mental health workforce shortages?</h2> Demand for mental health services is increasing in Australia, while at the same time the workforce <a href="https://www.health.gov.au/sites/default/files/2023-10/national-mental-health-workforce-strategy-2022-2032.pdf">faces worsening nation-wide shortages</a>. Psychologists, who provide <a href="https://www.aihw.gov.au/getmedia/6b19e493-0ebe-420f-a9a3-e48b26aace9f/aihw-aus-249-ib.pdf?v=20240628145747&inline=true">about half</a> of all mental health services, can have long wait times. Our results suggest that, with the appropriate training and guidelines, allied health professionals who specialise in diet and exercise could help address this gap. Lifestyle therapies can be combined with psychology sessions for multi-disciplinary care. But diet and exercise therapies could prove particularly effective for those on waitlists to see a psychologists, who may be receiving no other professional support while they wait. Many dietitians and exercise physiologists already have advanced skills and expertise in motivating behaviour change. Most accredited practising dietitians are trained in managing <a href="https://link.springer.com/content/pdf/10.1007/978-3-030-67929-3_38-1.pdf">eating disorders</a> or <a href="https://www.nature.com/articles/s41572-020-0200-2">gastrointestinal conditions</a>, which commonly overlap with depression. There is also a cost argument. It is <a href="https://journals.sagepub.com/doi/full/10.1177/1355819616668202">overall cheaper</a> to train a dietitian ($153,039) than a psychologist ($189,063) – and it takes less time. <h2>Potential barriers</h2> Australians with chronic conditions (such as diabetes) can access subsidised dietitian and exercise physiologist appointments under various Medicare treatment plans. Those with eating disorders can also access subsidised dietitian appointments. But mental health care plans for people with depression do not support subsidised sessions with dietitians or exercise physiologists, despite <a href="https://dietitiansaustralia.org.au/sites/default/files/2024-04/Dietitians%20Australia%20Mental%20Health%20Evidence%20Brief%202024.pdf">peak bodies</a> urging them to do so. Increased training, upskilling and Medicare subsidies would be needed to support dietitians and exercise physiologists to be involved in treating mental health issues. <a href="https://foodandmoodcentre.com.au/academy">Our training</a> and clinical <a href="https://www.tandfonline.com/doi/full/10.1080/15622975.2022.2112074">guidelines</a> are intended to help clinicians practising lifestyle-based mental health care within their scope of practice (activities a health care provider can undertake). <h2>Future directions</h2> Our trial took place during COVID lockdowns and examined people with at least mild symptoms of depression who did not necessarily have a mental disorder. We are seeking to replicate these findings and are now running <a href="https://foodandmoodcentre.com.au/projects/the-harmone-trial/">a study</a> open to Australians with mental health conditions such as major depression or bipolar disorder. If this article has raised issues for you, or if you’re concerned about someone you know, call Lifeline on 13 11 14.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/235952/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/adrienne-oneil-268324">Adrienne O'Neil</a>, Professor, Food & Mood Centre, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a> and <a href="https://theconversation.com/profiles/sophie-mahoney-1557294">Sophie Mahoney</a>, Associate Research Fellow, Food and Mood Centre, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/food-and-exercise-can-treat-depression-as-well-as-a-psychologist-our-study-found-and-its-cheaper-235952">original article</a>.

Body

Does screen use really impact our thinking skills? Our analysis suggests it could

<a href="https://theconversation.com/profiles/michoel-moshel-1433565">Michoel Moshel</a>, <a href="https://theconversation.com/institutions/macquarie-university-1174">Macquarie University</a>; <a href="https://theconversation.com/profiles/jennifer-batchelor-1485101">Jennifer Batchelor</a>, <a href="https://theconversation.com/institutions/macquarie-university-1174">Macquarie University</a>; <a href="https://theconversation.com/profiles/joanne-bennett-1485102">Joanne Bennett</a>, <a href="https://theconversation.com/institutions/australian-catholic-university-747">Australian Catholic University</a>, and <a href="https://theconversation.com/profiles/wayne-warburton-402810">Wayne Warburton</a>, <a href="https://theconversation.com/institutions/macquarie-university-1174">Macquarie University</a> Screens have become seamlessly integrated into our daily lives, serving as indispensable tools for work, education and leisure. But while they enrich our lives in countless ways, we often fail to consider the potential impact of screen time on our cognitive abilities. In a <a href="https://link.springer.com/article/10.1007/s11065-023-09612-4">new meta-analysis</a> of dozens of earlier studies, we’ve found a clear link between disordered screen use and lower cognitive functioning. The findings suggest we should exercise caution before advocating for more screen time, and before introducing screens into even more aspects of daily life. <h2>Young people’s screen time is increasing</h2> In 2020, a UNSW Gonski Institute for Education report <a href="https://www.gie.unsw.edu.au/sites/default/files/documents/UNSW%20GIE%20GUD%20Phase%201%20Technical%20Report%20MAR20%20v2.pdf">noted a concerning statistic</a>: about 84% of Australian educators believe digital technologies are distracting in a learning environment. And according to the ABC, a recent Beyond Blue <a href="https://www.abc.net.au/news/2023-09-18/mental-health-depression-anxiety-support-coming-for-schools/102831464">survey</a> of Australian teachers identified excessive screen time as the second-most significant challenge for young people, just behind mental health issues. Despite mounting concerns, more than half of Australian schools have embraced a “<a href="https://www.linewize.io/anz/blog/the-rise-of-byod-in-australian-schools">bring your own device</a>” policy. Students are spending more time online than <a href="https://read.oecd-ilibrary.org/education/students-computers-and-learning_9789264239555-en#page46">ever before</a> and starting at increasingly younger ages. A 2021 report by <a href="https://www.commonsensemedia.org/sites/default/files/research/report/8-18-census-integrated-report-final-web_0.pdf">Common Sense Media</a> estimated tweens spend an average of 5 hours and 33 minutes using screen-based entertainment each day, while teenagers devote a whopping 8 hours and 39 minutes. A surge in screen use has led to some individuals, including children, adolescents and adults, developing screen-related addictions. One example is gaming disorder, for which <a href="https://journals.sagepub.com/doi/full/10.1177/0004867420962851">2–3% of people</a> meet the criteria. <h2>What is ‘disordered screen use’?</h2> The impact of screens on our cognitive abilities – that is, our thinking skills such as attention, memory, language and problem-solving – has sparked much debate. On one hand, some researchers and reporters claim screen use can have negative effects, such as <a href="https://bmcpublichealth.biomedcentral.com/articles/10.1186/s12889-022-12701-3">health problems</a>, shortened attention <a href="https://time.com/3858309/attention-spans-goldfish/">spans</a> and hindered <a href="https://www.researchgate.net/publication/312489265_The_relationship_between_television_exposure_and_children's_cognition_and_behaviour_A_systematic_review">development</a>. On the other, schools are <a href="https://www.smh.com.au/education/tech-takeover-classrooms-crowded-with-digital-devices-20200125-p53ul1.html">increasingly adopting</a> technology to boost student engagement. Tech companies are also marketing their products as tools to help you enhance your problem-solving and memory skills. Our <a href="https://link.springer.com/article/10.1007/s11065-023-09612-4">recent study</a> sought to understand the potential cognitive consequences of “disordered screen-related behaviours”. This is a broad category of problematic behaviours that may include screen dependency, and persisting with screen use even when it’s harmful. We conducted a meta-analysis of 34 studies that explored various forms of screen use (including gaming, internet browsing, smartphone use and social media use) and compared the cognitive performance of individuals with disordered screen use to those without it. Our findings paint a concerning picture. <h2>Differences in cognitive function</h2> Across these rigorously peer-reviewed studies, individuals with disordered screen use consistently demonstrated significantly poorer cognitive performance compared to others. The most affected cognitive domain was attention, and specifically sustained attention, which is the ability to maintain focus on an unchanging stimulus for an extended period. The second-most notable difference was in their “executive functioning” – particularly in impulse control, which is the ability to control one’s automatic responses. Interestingly, the type of screen activity didn’t make a difference in the results. The trend also wasn’t confined to children, but was observed across all age groups. <h2>Two ways to interpret the results</h2> Why do people with disordered screen-related behaviours have poorer cognitive functioning? The first explanation is that disordered screen use actually leads to poorer cognitive function, including poorer attention skills (but we’ll need more experimental and longitudinal studies to establish causality). If this is the case, it may be the result of being constantly bombarded by algorithms and features designed to capture our attention. By diverting our focus outward, screen use may weaken one’s intrinsic ability to concentrate over time. Crucially, impaired attention also <a href="https://akjournals.com/view/journals/2006/10/1/article-p77.xml">makes it harder to disengage</a> from addictive behaviours, and would therefore make it harder to recognise when screen use has become a problem. The second explanation is that people who already have poorer cognitive functioning (such as less inhibitory control) are more likely to engage in disordered screen use. This could be a result of the plethora of addictive cues designed to keep us glued to our screens. Being bombarded by these could make it harder to <a href="https://akjournals.com/view/journals/2006/9/4/article-p990.xml">pull the brakes</a> on screen use. Although the literature doesn’t seem to favour this explanation – and does seem to suggest that cognitive functioning is impaired as a result of disordered screen use – it’s still a possibility we can’t rule out. Attention is the bedrock of everyday tasks. People with weakened attention may struggle to keep up in less stimulating environments, such as a static workplace or classroom. They may find themselves turning to a screen as a result. Similarly, people with less inhibitory control would also find it more challenging to moderate their screen use. This could be what drives them towards problematic screen-related behaviours in the first place. <h2>Who should shoulder the responsibility?</h2> Research indicates people with impaired cognitive functioning usually aren’t as well equipped to moderate their own screen time. Many users with disordered screen use are <a href="https://www.sciencedirect.com/science/article/pii/S0747563220302326?casa_token=BQv_N_MFffYAAAAA:AsGkAfdwXjCZHJB463G40Mx-ckS2Q1c8jSOn2SWR_9iW64eWaQsru1IJAZBDCgSPXwhZ3Qwl">young</a>, with mainly males engaging in internet gaming and mainly females engaging in social media use. Neurodiverse people are <a href="https://www.mdpi.com/1660-4601/19/9/5587">also at greater risk</a>. Tech companies are driven by the goal of <a href="https://www.theguardian.com/technology/2017/apr/18/netflix-competitor-sleep-uber-facebook">capturing our attention</a>. For instance, Netflix chief executive Reed Hastings acknowledged the company’s <a href="https://www.theguardian.com/technology/2017/apr/18/netflix-competitor-sleep-uber-facebook">most formidable competitor was sleep</a>. At the same time, researchers find themselves struggling to keep up with the pace of technological innovation. A potential path forward is to encourage open-access data policies from tech companies, so researchers can delve deeper into the study of screen use and its effect on individuals. <img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/216828/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/michoel-moshel-1433565">Michoel Moshel</a>, PhD/Masters Clinical Neuropsychology Candidate, <a href="https://theconversation.com/institutions/macquarie-university-1174">Macquarie University</a>; <a href="https://theconversation.com/profiles/jennifer-batchelor-1485101">Jennifer Batchelor</a>, Associate Professor, School of Psychological Sciences, <a href="https://theconversation.com/institutions/macquarie-university-1174">Macquarie University</a>; <a href="https://theconversation.com/profiles/joanne-bennett-1485102">Joanne Bennett</a>, Lecturer, <a href="https://theconversation.com/institutions/australian-catholic-university-747">Australian Catholic University</a>, and <a href="https://theconversation.com/profiles/wayne-warburton-402810">Wayne Warburton</a>, Associate Professor, <a href="https://theconversation.com/institutions/macquarie-university-1174">Macquarie University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/does-screen-use-really-impact-our-thinking-skills-our-analysis-suggests-it-could-216828">original article</a>.

Mind

Our obsession with taking photos is changing how we remember the past

<a href="https://theconversation.com/profiles/giuliana-mazzoni-175429">Giuliana Mazzoni</a>, <a href="https://theconversation.com/institutions/university-of-hull-1191">University of Hull</a> I recently visited the <a href="http://hermitage--www.hermitagemuseum.org/wps/portal/hermitage/?lng=sv">Hermitage</a> in St Petersburg, Russia – one of the best art museums in the world. I was expecting to serenely experience its masterpieces, but my view was blocked by a wall of smart phones taking pictures of the paintings. And where I could find a bit of empty space, there were people taking selfies to create lasting memories of their visit. For many people, taking hundreds, if not thousands, of pictures is now a crucial part of going on holiday – documenting every last detail and posting it on social media. But how does that affect our actual memories of the past – and how we view ourselves? As an expert on memory, I was curious. Unfortunately, psychological research on the topic is so far scant. But we do know a few things. We use smart phones and new technologies <a href="http://studie-life.de/en/life-reports/smart-payments;%20https://www.researchgate.net/profile/Tim_Fawns/publication/275331048_Blended_Memory_the_Changing_Balance_of_Technologically-mediated_Semantic_and_Episodic_Memory/links/56962c6d08ae820ff07594ee.pdf">as memory repositories</a>. This is nothing new – humans have always used external devices as an aid when acquiring knowledge and remembering. Writing certainly serves this function. Historical records are collective external memories. Testimonies of migrations, settlement or battles help entire nations trace a lineage, a past and an identity. In the life of an individual, written diaries serve a similar function. <h2>Memory effects</h2> Nowadays we tend to commit very little to memory – we entrust a huge amount to the cloud. Not only is it almost unheard of to recite poems, even the most personal events are generally recorded on our cellphones. Rather than remembering what we ate at someone’s wedding, we scroll back to look at all the images we took of the food. This has serious consequences. Taking photos of an event rather than being immersed in it has been shown to lead to <a href="https://theconversation.com/memory-loss-isnt-just-an-old-persons-problem-heres-how-young-people-can-stay-mentally-fit-102352">poorer recall of the actual event</a> – we get distracted in the process. Relying on photos to remember has a similar effect. Memory needs to be exercised on a regular basis in order to function well. There are many studies documenting the importance of memory retrieval practice – <a href="http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.738.2035&rep=rep1&type=pdf">for example in university students</a>. Memory is and will remain essential for learning. There is indeed some evidence showing that committing almost all knowledge and memories to the cloud <a href="https://www.journals.uchicago.edu/doi/10.1086/691462">might hinder the ability to remember</a>. However, there is a silver lining. Even if some studies claim that all this makes us more stupid, what happens is actually shifting skills from purely being able to remember to being able to manage the way we remember more efficiently. This is called metacognition, and it is an overarching skill that is also essential for students – for example when planning what and how to study. There is also substantial and reliable evidence that external memories, selfies included, <a href="https://www.ncbi.nlm.nih.gov/pubmed/23957379">can help</a> individuals with memory impairments. But while photos can in some instances help people to remember, the quality of the memories may be limited. We may remember what something looked like more clearly, but this could be at the expense of other types of information. One study showed that while photos could help people remember what they saw during some event, they <a href="https://journals.sagepub.com/doi/abs/10.1177/0956797617694868">reduced their memory of what was said</a>. <h2>Identity distortions?</h2> There are some rather profound risks when it comes to personal memory. Our identity is a product of our life experiences, which can be easily accessed through our memories of the past. So, does constant photographic documentation of life experiences alter how we see ourselves? There is no substantial empirical evidence on this yet, but I would speculate that it does. Too many images are likely to make us remember the past in a fixed way – blocking other memories. While it is <a href="https://theconversation.com/what-is-your-first-memory-and-did-it-ever-really-happen-95953">not uncommon for early childhood memories</a> to be based on photos rather than the actual events, these are not always true memories. Another issue is the fact that research has uncovered <a href="https://www.sciencedirect.com/science/article/pii/S0747563216302503;%20http://www.vulture.com/2014/01/history-of-the-selfie.html">a lack of spontaneity in selfies</a> and many other photos. They are planned, the poses are not natural and at times the image of the person is distorted. They also reflect a narcissistic tendency which shapes the face in unnatural mimics – artificial big smiles, sensual pouts, funny faces or offensive gestures. Importantly, selfies and many other photos are also <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5318447/">public displays</a> of specific attitudes, intentions and stances. In other words, they do not really reflect who we are, they reflect what we want to show to others about ourselves at the moment. If we rely heavily on photos when remembering our past, we may create a distorted self identity based on the image we wanted to promote to others. That said, our natural memory isn’t actually perfectly accurate. Research shows that we often <a href="https://theconversation.com/the-real-you-is-a-myth-we-constantly-create-false-memories-to-achieve-the-identity-we-want-103253">create false memories about the past</a>. We do this in order to maintain the identity that we want to have over time – and avoid conflicting narratives about who we are. So if you have always been rather soft and kind – but through some significant life experience decide you are tough – you may dig up memories of being aggressive in the past or even completely make them up. Having multiple daily memory reports on the phone of how we were in the past might therefore render our memory less malleable and less adaptable to the changes brought about by life – making our identity more stable and fixed. But this can create problems if our present identity becomes different from our fixed, past one. That is an uncomfortable experience and exactly what the “normal” functioning of memory is aimed to avoid – it is malleable so that we can have a non-contradictory narrative about ourselves. We want to think of ourselves as having a certain unchanging “core”. If we feel unable to change how we see ourselves over time, this could seriously affect our sense of agency and mental health. So our obsession with taking photos may be causing both memory loss and uncomfortable identity discrepancies. It is interesting to think about how technology changes the way we behave and function. As long as we are aware of the risks, we can probably mitigate harmful effects. The possibility that actually sends shivers to my spine is that we lose all those precious pictures because of some widespread malfunctioning of our smart phones. So the next time you’re at a museum, do take a moment to look up and experience it all. Just in case those photos go missing.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/109285/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/giuliana-mazzoni-175429">Giuliana Mazzoni</a>, Professor of Psychology, <a href="https://theconversation.com/institutions/university-of-hull-1191">University of Hull</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/our-obsession-with-taking-photos-is-changing-how-we-remember-the-past-109285">original article</a>.

Mind

Tastes from our past can spark memories, trigger pain or boost wellbeing. Here’s how to embrace food nostalgia

<a href="https://theconversation.com/profiles/megan-lee-490875">Megan Lee</a>, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a>; <a href="https://theconversation.com/profiles/doug-angus-1542552">Doug Angus</a>, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a>, and <a href="https://theconversation.com/profiles/kate-simpson-1542551">Kate Simpson</a>, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a> Have you ever tried to bring back fond memories by eating or drinking something unique to that time and place? It could be a Pina Colada that recalls an island holiday? Or a steaming bowl of pho just like the one you had in Vietnam? Perhaps eating a favourite dish reminds you of a lost loved one – like the sticky date pudding Nanna used to make? If you have, you have tapped into <a href="https://www.tandfonline.com/doi/full/10.1080/02699931.2022.2142525">food-evoked nostalgia</a>. As researchers, we are exploring how eating and drinking certain things from your past may be important for your mood and mental health. <h2>Bittersweet longing</h2> First named in 1688 by Swiss medical student, <a href="https://www.jstor.org/stable/44437799">Johannes Hoffer</a>, <a href="https://compass.onlinelibrary.wiley.com/doi/10.1111/spc3.12070">nostalgia</a> is that bittersweet, sentimental longing for the past. It is experienced <a href="https://journals.sagepub.com/doi/10.1111/j.1467-8721.2008.00595.x">universally</a> across different cultures and lifespans from childhood into older age. But nostalgia does not just involve positive or happy memories – we can also experience nostalgia for <a href="https://psycnet.apa.org/doiLanding?doi=10.1037%2F0022-3514.91.5.975">sad and unhappy moments</a> in our lives. In the <a href="https://psycnet.apa.org/doiLanding?doi=10.1037%2Femo0000817">short and long term</a>, nostalgia can positively impact our health by improving <a href="https://psycnet.apa.org/doiLanding?doi=10.1037%2Fa0025167">mood</a> and <a href="https://psycnet.apa.org/doiLanding?doi=10.1037%2Femo0000817">wellbeing</a>, fostering <a href="https://psycnet.apa.org/doiLanding?doi=10.1037%2Fa0017597">social connection</a> and increasing quality of life. It can also trigger feelings of <a href="https://psycnet.apa.org/doiLanding?doi=10.1037%2Femo0000817">loneliness or meaninglessness</a>. We can use nostalgia to <a href="https://psycnet.apa.org/doiLanding?doi=10.1037%2Fa0025167">turn around a negative mood</a> or enhance our sense of <a href="https://psycnet.apa.org/doiLanding?doi=10.1037%2Femo0000817">self, meaning and positivity</a>. Research suggests nostalgia alters activity in the <a href="https://academic.oup.com/scan/article/17/12/1131/6585517">brain regions associated with reward processing</a> – the same areas involved when we seek and receive things we like. This could explain the <a href="https://www.sciencedirect.com/science/article/abs/pii/S2352250X22002445?via%3Dihub">positive feelings</a> it can bring. Nostalgia can also increase feelings of loneliness and sadness, particularly if the memories highlight dissatisfaction, grieving, loss, or wistful feelings for the past. This is likely due to activation of <a href="https://www.sciencedirect.com/science/article/pii/S2352250X22002445?casa_token=V31ORDWcsx4AAAAA:Vef9hiwUz9506f5PYGsXH-JxCcnsptQnVPNaAGares2xTU5JbKSHakwGpLxSRO2dNckrdFGubA">brain areas</a> such as the amygdala, responsible for processing emotions and the prefrontal cortex that helps us integrate feelings and memories and regulate emotion. <h2>How to get back there</h2> There are several ways we can <a href="https://psycnet.apa.org/fulltext/2006-20034-013.html">trigger</a> or tap into nostalgia. Conversations with family and friends who have shared experiences, unique objects like photos, and smells can <a href="https://www.sciencedirect.com/science/article/abs/pii/S2352250X23000076">transport us back</a> to old times or places. So can a favourite song or old TV show, reunions with former classmates, even social media <a href="https://www.theverge.com/2015/3/24/8284703/facebook-on-this-day-nostalgia-recap">posts and anniversaries</a>. What we eat and drink can trigger <a href="https://www.emerald.com/insight/content/doi/10.1108/QMR-06-2012-0027/full/html">food-evoked nostalgia</a>. For instance, when we think of something as “<a href="https://theconversation.com/health-check-why-do-we-crave-comfort-food-in-winter-118776">comfort food</a>”, there are likely elements of nostalgia at play. Foods you found comforting as a child can evoke memories of being cared for and nurtured by loved ones. The form of these foods and the stories we tell about them may have been handed down through generations. Food-evoked nostalgia can be very powerful because it engages multiple senses: taste, smell, texture, sight and sound. The sense of <a href="https://www.tandfonline.com/doi/full/10.1080/09658211.2013.876048?casa_token=wqShWbRXJaYAAAAA%3AqJabgHtEbPtEQp7qHnl7wOb527bpGxzIJ_JwQX8eAyq1IrM_HQFIng8ELAMyuoFoeZyiX1zeJTPf">smell</a> is closely linked to the limbic system in the brain responsible for emotion and memory making food-related memories particularly vivid and emotionally charged. But, food-evoked nostalgia can also give rise to <a href="https://onlinelibrary.wiley.com/doi/full/10.1002/hpja.873">negative memories</a>, such as of being forced to eat a certain vegetable you disliked as a child, or a food eaten during a sad moment like a loved ones funeral. Understanding why these foods <a href="https://www.tandfonline.com/doi/full/10.1080/02699931.2022.2142525?casa_token=16kAPHUQTukAAAAA%3A9IDvre8yUT8UsuiR_ltsG-3qgE2sdkIFgcrdH3T5EYbVEP9JZwPcsbmsPLT6Kch5EFFs9RPsMTNn">evoke negative memories</a> could help us process and overcome some of our adult food aversions. Encountering these foods in a positive light may help us reframe the memory associated with them. <h2>What people told us about food and nostalgia</h2> Recently <a href="https://onlinelibrary.wiley.com/doi/full/10.1002/hpja.873">we interviewed eight Australians</a> and asked them about their experiences with food-evoked nostalgia and the influence on their mood. We wanted to find out whether they experienced food-evoked nostalgia and if so, what foods triggered pleasant and unpleasant memories and feelings for them. They reported they could use foods that were linked to times in their past to manipulate and influence their mood. Common foods they described as particularly nostalgia triggering were homemade meals, foods from school camp, cultural and ethnic foods, childhood favourites, comfort foods, special treats and snacks they were allowed as children, and holiday or celebration foods. One participant commented: <blockquote> I guess part of this nostalgia is maybe […] The healing qualities that food has in mental wellbeing. I think food heals for us. </blockquote> Another explained <blockquote> I feel really happy, and I guess fortunate to have these kinds of foods that I can turn to, and they have these memories, and I love the feeling of nostalgia and reminiscing and things that remind me of good times. </blockquote> Understanding food-evoked nostalgia is valuable because it provides us with an insight into how our sensory experiences and emotions intertwine with our memories and identity. While we know a lot about how food triggers nostalgic memories, there is still much to learn about the specific brain areas involved and the differences in food-evoked nostalgia in different cultures. In the future we may be able to use the science behind food-evoked nostalgia to help people experiencing dementia to tap into lost memories or in psychological therapy to help people reframe negative experiences. So, if you are ever feeling a little down and want to improve your mood, consider turning to one of your favourite comfort foods that remind you of home, your loved ones or a holiday long ago. Transporting yourself back to those times could help turn things around.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/232826/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/megan-lee-490875">Megan Lee</a>, Senior Teaching Fellow, Psychology, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a>; <a href="https://theconversation.com/profiles/doug-angus-1542552">Doug Angus</a>, Assistant Professor of Psychology, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a>, and <a href="https://theconversation.com/profiles/kate-simpson-1542551">Kate Simpson</a>, Sessional academic, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/tastes-from-our-past-can-spark-memories-trigger-pain-or-boost-wellbeing-heres-how-to-embrace-food-nostalgia-232826">original article</a>.

Mind

"Ruined our trip": Mum shell-shocked by $130k fine

A mother has been slapped with a hefty fine after her children were caught in a seemingly innocent act while on a beach holiday. Charlotte Russ took her five kids on a trip to Pismo Beach in California, where her children started enthusiastically collecting what they thought were ordinary seashells. "My kids they thought they were collecting seashells, but they were actually collecting clams, 72 to be exact," Russ told local news outlet <a href="https://abc7.com/post/fresno-woman-fined-88k-after-kids-collect-clams/14859295/" target="_blank" rel="nofollow noreferrer noopener">ABC 7</a>. Clamming is highly regulated in California, meaning if you don't have a fishing license, you cannot catch the small sea creatures. She received a citation right there on the beach and was later notified she has to pay close to $89,000, or $133,000 AUD, for her kids' seemingly innocent treasure hunt. "It made me really sad and depressed, and it kind of ruined our trip," said Russ. Department of Fish and Wildlife's Lieutenant Matthew Gil defended the fine, saying there are rules in place for a reason. "The reason we got it we have these regulations is because we have to let them get to 4 and a half inches so they can spawn so they can have they can have offspring every year, and they have juvenile clams," said Lt. Gil. Russ said her kids have learned their lesson, saying, "They know now at the beach don't touch anything, but they know now what a clam is, compared to what a seashell is now, I've had to explain that to them." The mother was able to plead her case with a San Luis Obispo County Judge, who reduced her fine to $500 dollars, and after she "won" her case, Russ got a shellfish tattoo to commemorate the incident. "It was definitely one expensive trip to Pismo, unforgettable," said Russ. Image credits: ABC 7

Travel Trouble

Does intermittent fasting have benefits for our brain?

<a href="https://theconversation.com/profiles/hayley-oneill-1458016">Hayley O'Neill</a>, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a> Intermittent fasting has become a popular dietary approach to help people lose or manage their <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8683964/">weight</a>. It has also been promoted as a way to reset metabolism, control chronic disease, slow ageing and <a href="https://pubmed.ncbi.nlm.nih.gov/27810402">improve overall health</a>. Meanwhile, some research suggests intermittent fasting may offer a different way for the brain to access energy and provide protection against neurodegenerative diseases like <a href="https://link.springer.com/article/10.1007/s11011-023-01288-2">Alzheimer’s disease</a>. This is not a new idea – the ancient Greeks believed fasting <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8839325/">enhanced thinking</a>. But what does the modern-day evidence say? <h2>First, what is intermittent fasting?</h2> Our <a href="https://pubmed.ncbi.nlm.nih.gov/35487190/">diets</a> – including calories consumed, macronutrient composition (the ratios of fats, protein and carbohydrates we eat) and when meals are consumed – are factors in our lifestyle we can change. People do this for cultural reasons, desired weight loss or potential health gains. Intermittent fasting consists of short periods of calorie (energy) restriction where food intake is limited for 12 to 48 hours (usually 12 to 16 hours per day), followed by periods of normal food intake. The intermittent component means a re-occurrence of the pattern rather than a “one off” fast. Food deprivation beyond 24 hours typically constitutes starvation. This is distinct from fasting due to its specific and potentially harmful biochemical alterations and nutrient deficiencies if continued for long periods. <h2>4 ways fasting works and how it might affect the brain</h2> The brain accounts for about <a href="https://theconversation.com/how-much-energy-do-we-expend-thinking-and-using-our-brain-197990">20% of the body’s energy consumption</a>. Here are four ways intermittent fasting can act on the body which could help explain its potential effects on the brain. 1. Ketosis The goal of many intermittent fasting routines is to flip a “<a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5913738/">metabolic switch</a>” to go from burning predominately carbohydrates to burning fat. This is called ketosis and typically occurs after 12–16 hours of fasting, when liver and glycogen stores are depleted. <a href="https://www.ncbi.nlm.nih.gov/books/NBK493179/">Ketones</a> – chemicals produced by this metabolic process – become the preferred energy source for the brain. Due to this being a slower metabolic process to produce energy and potential for lowering blood sugar levels, ketosis can <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10844723/">cause symptoms</a> of hunger, fatigue, nausea, <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8754590/">low mood</a>, irritability, constipation, headaches, and brain “fog”. At the same time, as glucose metabolism in the brain declines with ageing, studies have shown ketones could provide an alternative energy source to <a href="https://www.science.org/doi/10.1126/science.aau2095">preserve brain function</a> and prevent <a href="https://pubmed.ncbi.nlm.nih.gov/32709961/">age-related neurodegeneration disorders and cognitive decline</a>. Consistent with this, increasing ketones through <a href="https://pubmed.ncbi.nlm.nih.gov/31027873/">supplementation</a> or <a href="https://pubmed.ncbi.nlm.nih.gov/31757576/">diet</a> has been shown to improve cognition in adults with mild cognitive decline and those at risk of Alzheimer’s disease respectively. 2. Circadian syncing Eating at times that <a href="https://pubmed.ncbi.nlm.nih.gov/32480126/">don’t match our body’s natural daily rhythms</a> can disrupt how our organs work. Studies in shift workers have suggested this might also make us more prone to <a href="https://pubmed.ncbi.nlm.nih.gov/22010477/">chronic disease</a>. Time-restricted eating is when you eat your meals within a six to ten-hour window during the day when you’re most active. Time-restricted eating causes changes in <a href="https://pubmed.ncbi.nlm.nih.gov/36599299/">expression of genes in tissue</a> and helps the body during rest and activity. A 2021 <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7827225/">study of 883 adults</a> in Italy indicated those who restricted their food intake to ten hours a day were less likely to have cognitive impairment compared to those eating without time restrictions. 3. Mitochondria Intermittent fasting may provide <a href="https://pubmed.ncbi.nlm.nih.gov/35218914/">brain protection</a> through improving mitochondrial function, metabolism and reducing oxidants. Mitochondria’s <a href="https://www.genome.gov/genetics-glossary/Mitochondria">main role is to produce energy</a> and they are crucial to brain health. Many age-related diseases are closely related to an energy supply and demand imbalance, likely attributed to <a href="https://www.nature.com/articles/s41574-021-00626-7">mitochondrial dysfunction during ageing</a>. Rodent studies suggest alternate day fasting or reducing calories <a href="https://journals.sagepub.com/doi/10.1038/jcbfm.2014.114">by up to 40%</a> might protect or improve <a href="http://www.ncbi.nlm.nih.gov/pubmed/21861096">brain mitochondrial function</a>. But not all studies support this theory. 4. The gut-brain axis The <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6469458/">gut and the brain communicate with each other</a> via the body’s nervous systems. The brain can influence how the gut feels (think about how you get “butterflies” in your tummy when nervous) and the gut can affect mood, cognition and mental health. In mice, intermittent fasting has shown promise for <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5913738/">improving brain health</a> by increasing survival and <a href="https://pubmed.ncbi.nlm.nih.gov/12354284/">formation of neurons</a> (nerve cells) in the hippocampus brain region, which is involved in memory, learning and emotion. There’s <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8470960/">no clear evidence</a> on the effects of intermittent fasting on cognition in healthy adults. However one 2022 study interviewed 411 older adults and found <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9646955/">lower meal frequency</a> (less than three meals a day) was associated with reduced evidence of Alzheimer’s disease on brain imaging. Some research has suggested calorie restriction may have a protective effect against <a href="https://academic.oup.com/nutritionreviews/article/81/9/1225/7116310">Alzheimer’s disease</a> by reducing oxidative stress and inflammation and promoting vascular health. When we look at the effects of overall energy restriction (rather than intermittent fasting specifically) the evidence is mixed. Among people with mild cognitive impairment, one study showed <a href="https://pubmed.ncbi.nlm.nih.gov/26713821/">cognitive improvement</a> when participants followed a calorie restricted diet for 12 months. Another study found a 25% calorie restriction was associated with <a href="https://pubmed.ncbi.nlm.nih.gov/30968820">slightly improved working memory</a> in healthy adults. But a <a href="https://www.sciencedirect.com/science/article/pii/S0022316623025221?via%3Dihub">recent study</a>, which looked at the impact of calorie restriction on spatial working memory, found no significant effect. <h2>Bottom line</h2> Studies in <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9740746/">mice</a> support a role for intermittent fasting in improving brain health and ageing, but few studies in humans exist, and the evidence we have is mixed. Rapid weight loss associated with calorie restriction and intermittent fasting can lead to nutrient deficiencies, muscle loss, and decreased immune function, particularly in <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8749464/">older adults</a> whose nutritional needs may be higher. Further, <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6314618/">prolonged fasting</a> or <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9042193/">severe calorie restriction</a> may pose risks such as fatigue, dizziness, and electrolyte imbalances, which could exacerbate existing health conditions. If you’re considering <a href="https://www.nejm.org/doi/10.1056/NEJMra1905136?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub%20%200pubmed">intermittent fasting</a>, it’s best to seek advice from a health professional such as a dietitian who can provide guidance on structuring fasting periods, meal timing, and nutrient intake. This ensures intermittent fasting is approached in a safe, sustainable way, tailored to individual needs and goals.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/223181/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/hayley-oneill-1458016">Hayley O'Neill</a>, Assistant Professor, Faculty of Health Sciences and Medicine, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a> This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/does-intermittent-fasting-have-benefits-for-our-brain-223181">original article</a>. Image: Getty

Body

Why our voices change as we get older

<a href="https://theconversation.com/profiles/adam-taylor-283950">Adam Taylor</a>, <a href="https://theconversation.com/institutions/lancaster-university-1176">Lancaster University</a> Sir Elton John set a record at this year’s Glastonbury, becoming the <a href="https://www.independent.co.uk/arts-entertainment/music/news/elton-john-glastonbury-viewing-record-b2364260.html">most-watched headliner</a> in the festival’s history, with more than 7 million people tuning in live to the BBC to watch his last ever UK performance. The 76-year-old singer certainly delivered all his characteristic showmanship. But many who have followed his music over the decades will have noticed how much his voice has changed during his career – and not only because of the <a href="https://www.billboard.com/music/music-news/a-qa-with-elton-john-65620/">surgery he had</a> in the 1980s to <a href="https://ultimateclassicrock.com/elton-john-throat-surgery/">remove polyps</a> from his vocal cords. Equally, it’s not all down to the process of ageing. While it’s no mystery that this affects every part of our body, it isn’t the only reason that a person’s voice – even a professional singer like Sir Elton – can sound quite different over the years. <h2>The sound of your voice</h2> The vocal cords are what produce the sound of your voice. They are located in the <a href="https://www.ncbi.nlm.nih.gov/books/NBK538202/">larynx</a>, a part of the respiratory system that allows air to pass from your throat to your lungs. When air passes out of the lungs and through the larynx, it causes the vocal cords to vibrate – <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5412481/">producing sound</a>. The vocal cords are composed of <a href="https://www.kenhub.com/en/library/anatomy/vocal-cords">three main parts</a>: the vocalis muscle, vocal ligament, and a mucous membrane (containing glands) to cover them. This keeps the surface moist and <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2810851/">protects them from damage</a>. There are also approximately <a href="https://radiopaedia.org/articles/intrinsic-muscles-of-the-larynx?lang=gb">17 other muscles</a> in the larynx that can alter vocal cord position and tension – thus changing the sound produced. Pre-puberty, there’s very little difference in the sound the vocal cords produce. But during puberty, hormones begin exerting their effects. This changes the structure of the larynx – making the “Adam’s apple” more prominent in men – and the <a href="https://www.sciencedirect.com/science/article/abs/pii/S0018506X16301271?via%3Dihub">length of the vocal cords</a>. After puberty, they’re around 16mm in length in men, and 10mm in women. Women’s vocal cords are also <a href="https://pubs.aip.org/asa/jasa/article/82/S1/S90/719336/Physiology-of-the-female-larynx">20-30%</a> thinner after puberty. These shorter, thinner vocal cords are the reason why women typically have <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3306615">higher voices</a> than men. Even after puberty, hormones can affect the voice. For instance, a woman’s voice may sound different depending on the stage of her menstrual cycle – with the <a href="https://www.jvoice.org/article/S0892-1997(08)00169-0/fulltext">best voice quality</a> being in the ovulatory phase. This is because the glands produce most mucous during this phase, giving the vocal cords their best functional ability. Research also shows that women taking the contraceptive pill show <a href="https://www.sciencedirect.com/science/article/abs/pii/S0892199717304940">less variation in voice quality</a> because the pill halts ovulation. On the other hand, hormonal changes during the premenstrual phase impede the vocal cords, making them stiffer. This may explain why opera singers would be offered “<a href="https://www.sciencedirect.com/science/article/abs/pii/S0892199717301133">grace days</a>” in the 1960s to ensure they didn’t damage their vocal cords. And, because <a href="https://www.asha.org/practice-portal/clinical-topics/voice-disorders/#collapse_1">women’s vocal cords</a> are thinner, they may also be more likely to <a href="https://pubmed.ncbi.nlm.nih.gov/15157130/">suffer damage</a> from overuse. <h2>Everything ages</h2> As with almost every other part of the body, vocal cords age. But these changes might not be as <a href="https://www.sciencedirect.com/science/article/pii/S0892199721000011">noticeable for everyone</a>. As we get older, the larynx begins increasing its <a href="https://www.sciencedirect.com/science/article/abs/pii/S1752928X21001840">mineral content</a>, making it stiffer and more like bone than cartilage. This change can begin happening as early as <a href="https://meridian.allenpress.com/angle-orthodontist/article/75/2/196/57743/Ossification-of-Laryngeal-Cartilages-on-Lateral">your thirties</a> – especially in men. This makes the vocal cords less flexible. The muscles that allow the vocal cords to move also <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6166195/">begin wasting</a> (as do our other muscles) as we age. The ligaments and tissues that support the vocal cords also <a href="https://pubmed.ncbi.nlm.nih.gov/11800365/">lose elasticity</a>, becoming <a href="https://pubmed.ncbi.nlm.nih.gov/25645525/">less flexible</a>. There’s also a decrease in <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2695176/">pulmonary muscle function</a>, reducing the power of the air expelled from the lungs to create the sound. The number of glands that produce the protective mucus also decrease, alongside a reduction in the ability to <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10156980/">control the larynx</a>. <h2>Lifestyle is a factor</h2> While vocal cords age at largely the same rate in most people, many lifestyle factors can increase the risk of damage to them – and so can change the way your voice sounds. Smoking, for example, causes <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3918293/">localised inflammation</a>, increased <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4824943/">mucous production</a>, but can also <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4557797/">dry out</a> the mucosal surfaces. Alcohol has a <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6166195/">similar effect</a>. Over time, these factors can damage the vocal cords and alter the voice’s sound. Some over-the-counter and prescription drugs can also alter the voice – such as <a href="https://jamanetwork.com/journals/jamaotolaryngology/fullarticle/482932">steroid inhalers used for laryngitis</a>. Blood thinners may also <a href="https://pubmed.ncbi.nlm.nih.gov/10875579/">damage the vocal cords</a> and can cause polyps to form, making the voice sound raspy or hoarse. <a href="https://pubmed.ncbi.nlm.nih.gov/7395839/">Muscle relaxants</a>, too, can lead to irritation and vocal cord damage due to the drug allowing stomach acid to wash back into the larynx. Thankfully, the irritation and changes caused by these medications typically disappears after stopping use. One other lifestyle factor can be overuse, which is typically seen in singers and other people who use their voice a lot <a href="https://pubmed.ncbi.nlm.nih.gov/15157130/">during work</a>, such as teachers and fitness instructors. This can lead to an uncommon condition called <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9392404/">Reinke’s oedema</a>, which can also be caused by smoking. Reinke’s oedema causes fluid to swell in the vocal cords, changing the pitch of the voice – often <a href="https://www.cuh.nhs.uk/patient-information/reinkes-oedema/">making it deeper</a>. In extreme cases of Reinke’s oedema, <a href="https://link.springer.com/article/10.1007/s00405-022-07377-9">surgery is needed</a> to drain the fluid. But in most cases, rest and avoiding irritants (smoking and alcohol) is beneficial, while speech and language therapy can also address the <a href="https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1460-6984.1995.tb01660.x">change in sound</a>. <h2>Maintaining our vocal quality</h2> While we can’t help some of the age-related changes that happen to our vocal cords, we can maintain some of our vocal quality and ability through continued use. This may explain why, in many cases, singers show <a href="https://pubmed.ncbi.nlm.nih.gov/27049451/">significantly less vocal change</a> with age than their non-singing counterparts. Singing or <a href="https://www.aarp.org/health/healthy-living/info-2014/improve-aging-voice.html">reading out</a> loud daily can give the vocal cords sufficient exercise to slow their decline. <a href="https://www.nidcd.nih.gov/health/taking-care-your-voice">Looking after</a> your vocal cords is also important. Staying hydrated and limiting intake of <a href="https://www.cuh.nhs.uk/patient-information/presbyphonia/">alcohol</a> and <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7069957/">tobacco</a> can help prevent high rates of decline and damage.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/208640/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/adam-taylor-283950">Adam Taylor</a>, Professor and Director of the Clinical Anatomy Learning Centre, <a href="https://theconversation.com/institutions/lancaster-university-1176">Lancaster University</a> Image credits: Getty Images This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/why-our-voices-change-as-we-get-older-208640">original article</a>.

Body

Leap of imagination: how February 29 reminds us of our mysterious relationship with time and space

<a href="https://theconversation.com/profiles/emily-ohara-874665">Emily O'Hara</a>, <a href="https://theconversation.com/institutions/auckland-university-of-technology-1137">Auckland University of Technology</a> If you find it intriguing that February 28 will be followed this week by February 29, rather than March 1 as it usually is, spare a thought for those alive in 1582. Back then, Thursday October 4 was followed by Friday October 15. Ten whole days were snatched from the present when Pope Gregory XIII issued a papal bull to “restore” the calendar from discrepancies that had crept into the Julian calendar, introduced by Julius Caesar in 45 BCE. The new Gregorian calendar returned the northern hemisphere’s vernal equinox to its “proper” place, around March 21. (The equinox is when the Earth’s axis is tilted neither toward nor away from the sun, and is used to determine the date of Easter.) The Julian calendar had observed a leap year every four years, but this meant time had drifted out of alignment with the dates of celestial events and astronomical seasons. In the Gregorian calendar, leap days were added only to years that were a multiple of four – like 2024 – with an exception for years that were evenly divisible by 100, but not 400 – like 1700. Simply put, leap days exist because it doesn’t take a neat 365 days for Earth to orbit the Sun. It takes 365.2422 days. Tracking the movement of celestial objects through space in an orderly pattern doesn’t quite work, which is why we have February – time’s great mop. <h2>Time and space</h2> This is just part of the history of how February – the shortest month, and originally the last month in the Roman calendar – came to have the job of absorbing those inconsistencies in the temporal calculations of the world’s most commonly used calendar. There is plenty of <a href="https://theconversation.com/leap-day-fixing-the-faults-in-our-stars-54032">science</a>, <a href="https://theconversation.com/explainer-the-science-behind-leap-years-and-how-they-work-54788">maths</a> and <a href="https://theconversation.com/how-a-seasonal-snarl-up-in-the-mid-1500s-gave-us-our-strange-rules-for-leap-years-132659">astrophysics</a> explaining the relationship between time and the planet we live on. But I like to think leap years and days offer something even more interesting to consider: why do we have calendars anyway? And what have they got to do with how we understand the wonder and strangeness of our existence in the universe? Because calendars tell a story, not just about time, but also about space. Our reckoning of time on Earth is through our spatial relationship to the Sun, Moon and stars. Time, and its place in our lives, sits somewhere between the scientific, the celestial and the spiritual. It is <a href="https://shop.whitechapelgallery.org/products/time">notoriously slippery, subjective and experiential</a>. It is also marked, tracked and determined in myriad ways across different cultures, from tropical to solar to <a href="https://www.stuff.co.nz/pou-tiaki/300062097/matariki-and-the-maramataka-the-mori-lunar-calendar">lunar</a> calendars. It is the Sun that measures a day and gives us our first reference point for understanding time. But it is the <a href="https://librarysearch.aut.ac.nz/vufind/Record/1145999?sid=25214690">Moon</a>, as a major celestial body, that extends our perception of time. By stretching a span of one day into something longer, it offers us a chance for philosophical reflection. The Sun (or its effect at least) is either present or not present. The Moon, however, goes through phases of transformation. It appears and disappears, changing shape and hinting that one night is not exactly like the one before or after. The Moon also has a distinct rhythm that can be tracked and understood as a pattern, giving us another sense of duration. Time is just that – overlapping durations: instants, seconds, minutes, hours, days, weeks, months, years, decades, lifetimes, centuries, ages. <h2>The elusive Moon</h2> It is almost impossible to imagine how time might feel in the absence of all the tools and gadgets we use to track, control and corral it. But it’s also hard to know what we might do in the absence of time as a unit of productivity – a measurable, dispensable resource. The closest we might come is simply to imagine what life might feel like in the absence of the Moon. Each day would rise and fall, in a rhythm of its own, but without visible reference to anything else. Just endless shifts from light to dark. Nights would be almost completely dark without the light of the Moon. Only stars at a much further distance would puncture the inky sky. The world around us would change – trees would grow, mammals would age and die, land masses would shift and change – but all would happen in an endless cycle of sunrise to sunset. The light from the Sun takes <a href="https://www.skyatnightmagazine.com/space-science/how-take-light-from-sun-reach-earth">eight minutes</a> to reach Earth, so the sunlight we see is always eight minutes in the past. I remember sitting outside when I first learned this, and wondering what the temporal delay might be between me and other objects: a plum tree, trees at the end of the street, hills in the distance, light on the horizon when looking out over the ocean, stars in the night sky. Moonlight, for reference, takes about <a href="https://www.pbs.org/seeinginthedark/astronomy-topics/light-as-a-cosmic-time-machine.html">1.3 seconds</a> to get to Earth. Light always travels at the same speed, it is entirely constant. The differing duration between how long it takes for sunlight or moonlight to reach the Earth is determined by the space in between. Time on the other hand, is anything but constant. There are countless ways we characterise it. The mere fact we have so many calendars and ways of describing perceptual time hints at our inability to pin it down. Calendars give us the impression we can, and have, made time predictable and understandable. Leap years, days and seconds serve as a periodic reminder that we haven’t.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/224503/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/emily-ohara-874665">Emily O'Hara</a>, Senior Lecturer, Spatial Design + Temporary Practices, <a href="https://theconversation.com/institutions/auckland-university-of-technology-1137">Auckland University of Technology</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/leap-of-imagination-how-february-29-reminds-us-of-our-mysterious-relationship-with-time-and-space-224503">original article</a>.

Technology

Our dogs can terrify (and even kill) wildlife. Here’s how to be a responsible owner this summer

<a href="https://theconversation.com/profiles/melissa-starling-461103">Melissa Starling</a>, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a> In Australia, dog ownership often goes hand-in-hand with a love for the great outdoors. Whether it’s walking on the beach, going camping, or having a barbecue in the park, we tend to keep our canine companions close as we soak up the sun. But many of us forget a key fact about our dogs: they are predators. Even the fluffy little 5kg ball that spends most of its time in your lap derives from an apex predator – and its predatory instincts can kick in at any time. And while many of our dogs don’t have the same hunting skills as their distant ancestors (who had to hunt for a living), wildlife doesn’t know that. The impacts of domestic dogs on wildlife aren’t well studied, and likely vary depending on the environment. Nonetheless, there’s good evidence domestic dogs, when left unobserved, can have detrimental effects in the places they visit. With that in mind, here are some things to consider next time you take your pup out for a bushwalk. <h2>How dogs impact ecosystems</h2> There are <a href="https://www.sciencedirect.com/science/article/abs/pii/S0006320717305967">five main ways</a> domestic dogs can negatively impact the natural environments they visit. These are: <ol> <li>direct physical harm through predatory behaviour</li> <li>disturbance through chasing and harassment</li> <li>increased exposure to diseases</li> <li>interbreeding, which can alter the gene pool of wild canid populations</li> <li>increased competition for resources.</li> </ol> The good news is the last three points aren’t particularly relevant in Australia. For one thing, there’s little overlap between diseases common in domestic dogs and Australian wildlife. There’s also little resource overlap, except perhaps in some areas where feral or semi-feral dogs live alongside dingoes. And regarding potential interbreeding, while it was once thought this could threaten the dingo gene pool, <a href="https://onlinelibrary.wiley.com/doi/full/10.1111/mec.16998">recent research</a> suggests it’s not nearly as common as we thought. As such, the main harms Aussie dog owners should focus on are physical harms through predatory behaviour and disturbance to ecosystems. <h2>Dogs can kill</h2> We know dogs are capable of injuring and killing wildlife, but it’s difficult to determine how common this is, because many events go unreported. While smaller animals such as lizards, gliders and possums are at higher risk, larger species such as koalas can also fall prey to dogs. <a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0206958">One study</a> that looked at wildlife coming into care at Queensland rehabilitation centres reported dog attacks as the cause in about 9% of cases. These cases often resulted in severe injury or death. Dog owners should be especially wary of small, localised populations of vulnerable species. A <a href="https://ri.conicet.gov.ar/bitstream/handle/11336/202640/CONICET_Digital_Nro.29048152-7a5c-4ea2-8068-e73d42cba01d_B.pdf?sequence=2&isAllowed=y">study</a> in Argentina’s Patagonia region details several cases of dogs decimating local penguin populations after gaining access to protected island areas during low tide. Not to mention, dog attacks on wildlife can bring risk to dogs as well. Kangaroos can defend themselves with <a href="https://www.abc.net.au/news/2023-10-16/mildura-man-fights-kangaroo-to-protect-dog/102983926">their powerful limbs</a>, monitor lizards are equipped with sharp claws and teeth, and many snake species <a href="https://www.brisbanetimes.com.au/national/queensland/dogs-twice-as-likely-to-die-from-snake-bite-as-cats-research-finds-20200519-p54ufd.html">are highly venomous</a>. <h2>The impact of harassment</h2> You might think it’s harmless for your dog to chase wildlife if it never manages to catch the animals it chases, but that isn’t true. Wild animals optimise their behaviours to meet their needs for foraging, breeding and resting, and being chased by a dog can disrupt this. For example, certain threatened bird species will nest on the beach and find foraging opportunities based on the tides. One dog forcing one bird to abandon this important activity may have a small impact. But if it happens repeatedly throughout the day, it can become a <a href="https://wilderness-society.org/wp-content/uploads/2019/04/Dogs-as-agents-of-disturbance-Michael-A.-Weston-and-Theodore-Stankowich.pdf">much bigger problem</a>. It may even drive animals out of the area. <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2391219/">Research</a> conducted in Sydney has shown the mere presence of a leashed dog is enough to temporarily, yet dramatically, reduce the number of bird species detected. <h2>Keep an eye on your furry pal</h2> Responsible dog ownership involves making sure our dogs have a minimal impact on others, including wildlife. How can we achieve this when our dogs are simply engaging in behaviours that come naturally to them, and may even be rewarding for them? Training your dog to have general obedience – especially to come when called – is worth sinking considerable time and effort into. This can save both your dog and any wildlife they may be after. For instance, calling a dog away from a snake is one of the most effective ways of managing snake bite risk. One <a href="https://www.researchgate.net/publication/333344634_Applying_Social_Marketing_to_Koala_Conservation_The_Leave_It_Pilot_Program">pilot study</a> in Victoria found positive outcomes from a program that helped owners train their dogs to be more obedient around wildlife. That said, recall training is an art form, and recalling a dog that likes to run off and chase animals can be a huge challenge. Another solution is to rely on leashes when passing sensitive areas, or where there’s a risk of wildlife harassment. In Australia, many beaches that allow dogs have signs with information about vulnerable birds in the area and how to protect them from your dog. This could mean keeping your dog off rock platforms, leashing them when you see birds foraging on the beach, or keeping them out of fenced areas. Some areas are simply too vulnerable for dogs to run amok, so always look for signs and read them carefully. If you’re hiking, use a long line (a leash that’s more than five metres long) and look for signs of your dog detecting something of interest. Often their ears will come up high and forward, and they will freeze and stare intently. At this point, it doesn’t matter what they’re excited about: take the opportunity to leash them or shorten their leash, and get their attention before they can take off. Investing in a long leash will allow your dog more freedom without putting wildlife at risk. If your dog does injure an animal, you should quickly contact a wildlife rescue organisation or take the animal to a veterinary practice or sanctuary. For small animals, even minor injuries from a dog will usually require veterinary attention. It’s our responsibility to be respectful visitors when we’re out in nature, and to make sure our dogs are too. <img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/214722/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/melissa-starling-461103">Melissa Starling</a>, Postdoctoral Researcher in Veterinary Science, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a> Image credits: Getty Images This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/our-dogs-can-terrify-and-even-kill-wildlife-heres-how-to-be-a-responsible-owner-this-summer-214722">original article</a>.

Family & Pets

"Our Jimmy made it": Barnes' happy message from the ICU

Iconic Australian rock singer Jimmy Barnes has emerged victorious from a challenging battle with a bacterial infection that led him to undergo emergency open heart surgery. The Cold Chisel frontman, at 67 years young, faced a sudden health setback but is now on the road to recovery in the ICU. The journey began at the end of last month when Barnes was <a href="https://www.oversixty.co.nz/health/caring/jimmy-barnes-hospitalised-with-major-health-issue" target="_blank" rel="noopener">hospitalised with pneumonia</a>. His wife, Jane, has now provided a heartening update on Instagram, sharing a photo from the hospital and revealing that the surgery was successful. Gratitude poured out to the dedicated medical team who played a crucial role in his recovery. <blockquote class="instagram-media" style="background: #FFF; border: 0; border-radius: 3px; box-shadow: 0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width: 540px; min-width: 326px; padding: 0; width: calc(100% - 2px);" data-instgrm-captioned="" data-instgrm-permalink="https://www.instagram.com/p/C0yULk4hvT6/?utm_source=ig_embed&utm_campaign=loading" data-instgrm-version="14"> <div style="padding: 16px;"> <div style="display: flex; flex-direction: row; align-items: center;"> <div style="background-color: #f4f4f4; border-radius: 50%; flex-grow: 0; height: 40px; margin-right: 14px; width: 40px;"> </div> <div style="display: flex; flex-direction: column; flex-grow: 1; justify-content: center;"> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 100px;"> </div> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; width: 60px;"> </div> </div> </div> <div style="padding: 19% 0;"> </div> <div style="display: block; height: 50px; margin: 0 auto 12px; width: 50px;"> </div> <div style="padding-top: 8px;"> <div style="color: #3897f0; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: 550; line-height: 18px;">View this post on Instagram</div> </div> <div style="padding: 12.5% 0;"> </div> <div style="display: flex; flex-direction: row; margin-bottom: 14px; align-items: center;"> <div> <div style="background-color: #f4f4f4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(0px) translateY(7px);"> </div> <div style="background-color: #f4f4f4; height: 12.5px; transform: rotate(-45deg) translateX(3px) translateY(1px); width: 12.5px; flex-grow: 0; margin-right: 14px; margin-left: 2px;"> </div> <div style="background-color: #f4f4f4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(9px) translateY(-18px);"> </div> </div> <div style="margin-left: 8px;"> <div style="background-color: #f4f4f4; border-radius: 50%; flex-grow: 0; height: 20px; width: 20px;"> </div> <div style="width: 0; height: 0; border-top: 2px solid transparent; border-left: 6px solid #f4f4f4; border-bottom: 2px solid transparent; transform: translateX(16px) translateY(-4px) rotate(30deg);"> </div> </div> <div style="margin-left: auto;"> <div style="width: 0px; border-top: 8px solid #F4F4F4; border-right: 8px solid transparent; transform: translateY(16px);"> </div> <div style="background-color: #f4f4f4; flex-grow: 0; height: 12px; width: 16px; transform: translateY(-4px);"> </div> <div style="width: 0; height: 0; border-top: 8px solid #F4F4F4; border-left: 8px solid transparent; transform: translateY(-4px) translateX(8px);"> </div> </div> </div> <div style="display: flex; flex-direction: column; flex-grow: 1; justify-content: center; margin-bottom: 24px;"> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 224px;"> </div> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; width: 144px;"> </div> </div> <p style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; line-height: 17px; margin-bottom: 0; margin-top: 8px; overflow: hidden; padding: 8px 0 7px; text-align: center; text-overflow: ellipsis; white-space: nowrap;"><a style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: normal; line-height: 17px; text-decoration: none;" href="https://www.instagram.com/p/C0yULk4hvT6/?utm_source=ig_embed&utm_campaign=loading" target="_blank" rel="noopener">A post shared by Jimmy Barnes (@jimmybarnesofficial)</a> </div> </blockquote> "I’m happy to let you know that our Jimmy has made it through his surgery and is now recovering in the ICU," Jane wrote. "We are so grateful for the incredible medical team looking after him. Thank you for all the love and support." Earlier, Barnes bravely shared the news that the bacterial infection had <a href="https://www.oversixty.co.nz/health/caring/bad-news-jimmy-barnes-rushed-into-emergency-open-heart-surgery" target="_blank" rel="noopener">spread to his heart</a>. Despite this unexpected challenge, he faced the situation with courage and underwent open heart surgery to clear out the infection and replace a valve. The infection had affected a valve replaced years ago due to a congenital defect. Barnes, who was set to headline the Rock the Boat 2023 cruise festival before falling ill, reflected on his recent peak fitness just weeks prior. The sudden turn of events required adjustments to upcoming shows, causing some frustration for the singer. However, his son, David Campbell, reassured fans on the Today show, emphasising his father's frustration for the fans and passion for supporting the music industry. "He is in wonderful hands," Campbell said, expressing confidence in the medical team. Barnes' son also encouraged fans to reach out to him on social media, assuring everyone that the rock legend would make a great recovery. As the music community rallies around Barnes, sending waves of positivity and healing energy, we look forward to a speedy recovery and many more years of rock and roll from the indomitable Jimmy Barnes! Images: Instagram

Caring

Do you really need antibiotics? Curbing our use helps fight drug-resistant bacteria

<a href="https://theconversation.com/profiles/minyon-avent-1486987">Minyon Avent</a>, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a>; <a href="https://theconversation.com/profiles/fiona-doukas-1157050">Fiona Doukas</a>, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a>, and <a href="https://theconversation.com/profiles/kristin-xenos-1491653">Kristin Xenos</a>, <a href="https://theconversation.com/institutions/university-of-newcastle-1060">University of Newcastle</a> Antibiotic resistance occurs when a microorganism changes and no longer responds to an antibiotic that was previously effective. It’s <a href="https://thelancet.com/journals/eclinm/article/PIIS2589-5370(21)00502-2/fulltext">associated with</a> poorer outcomes, a greater chance of death and higher health-care costs. In Australia, antibiotic resistance means some patients are admitted to hospital because oral antibiotics are <a href="https://www.who.int/news-room/fact-sheets/detail/antibiotic-resistance">no longer effective</a> and they need to receive intravenous therapy via a drip. Antibiotic resistance is rising to high levels in certain parts of the world. Some hospitals <a href="https://www.reactgroup.org/news-and-views/news-and-opinions/year-2022/the-impact-of-antibiotic-resistance-on-cancer-treatment-especially-in-low-and-middle-income-countries-and-the-way-forward/">have to consider</a> whether it’s even viable to treat cancers or perform surgery due to the risk of antibiotic-resistant infections. Australia is <a href="https://www.safetyandquality.gov.au/our-work/antimicrobial-resistance/antimicrobial-use-and-resistance-australia-aura/aura-2023-fifth-australian-report-antimicrobial-use-and-resistance-human-health">one of the highest users</a> of antibiotics in the developed world. We need to use this precious resource wisely, or we risk a future where a simple infection could kill you because there isn’t an effective antibiotic. <h2>When should antibiotics not be used?</h2> Antibiotics only work for some infections. They work against bacteria but <a href="https://www.safetyandquality.gov.au/publications-and-resources/resource-library/do-i-really-need-antibiotics">don’t treat</a> infections caused by viruses. Most community acquired infections, even those caused by bacteria, are likely to get better without antibiotics. Taking an antibiotic when you don’t need it won’t make you feel better or recover sooner. But it can increase your chance of side effects like nausea and diarrhoea. Some people think green mucus (or snot) is a sign of bacterial infection, requiring antibiotics. But it’s actually <a href="https://www.safetyandquality.gov.au/sites/default/files/2023-11/aura_2023_do_i_really_need_antibiotics.pdf">a sign</a> your immune system is working to fight your infection. <h2>If you wait, you’ll often get better</h2> <a href="https://www.tg.org.au/">Clinical practice guidelines</a> for antibiotic use aim to ensure patients receive antibiotics when appropriate. Yet 40% of GPs say they prescribe antibiotics <a href="https://doi.org/10.1071/HI13019">to meet patient expectations</a>. And <a href="https://pubmed.ncbi.nlm.nih.gov/35973750/">one in five</a> patients expect antibiotics for respiratory infections. It can be difficult for doctors to decide if a patient has a viral respiratory infection or are at an early stage of serious bacterial infection, particularly in children. One option is to “watch and wait” and ask patients to return if there is clinical deterioration. An alternative is to prescribe an antibiotic but advise the patient to not have it dispensed unless specific symptoms occur. This can <a href="https://doi.org/10.1002/14651858.CD004417.pub5">reduce antibiotic use by 50%</a> with no decrease in patient satisfaction, and no increase in complication rates. <h2>Sometimes antibiotics are life-savers</h2> For some people – particularly those with a weakened immune system – a simple infection can become more serious. Patients with life-threatening suspected infections should receive an appropriate antibiotic <a href="https://www.safetyandquality.gov.au/our-work/clinical-care-standards/antimicrobial-stewardship-clinical-care-standard">immediately</a>. This includes serious infections such as <a href="https://www.hopkinsmedicine.org/health/conditions-and-diseases/bacterial-meningitis#:%7E:text=What%20is%20bacterial%20meningitis%3F,can%20cause%20life%2Dthreatening%20problems.">bacterial meningitis</a> (infection of the membranes surrounding the brain) and <a href="https://clinicalexcellence.qld.gov.au/priority-areas/safety-and-quality/sepsis/adult-sepsis#:%7E:text=Adult%20patients%20with%20sepsis%20also,adult%20emergency%20department%20sepsis%20pathway.">sepsis</a> (which can lead to organ failure and even death). <h2>When else might antibiotics be used?</h2> Antibiotics are sometimes used to prevent infections in patients who are undergoing surgery and are at significant risk of infection, such as those undergoing bowel resection. These patients will <a href="https://www.tg.org.au">generally receive</a> a single dose before the procedure. Antibiotics may also <a href="https://www.tg.org.au">be given</a> to patients undergoing chemotherapy for solid organ cancers (of the breast or prostate, for example), if they are at high risk of infection. While most sore throats are caused by a virus and usually resolve on their own, some high risk patients with a bacterial strep A infection which can cause “scarlet fever” are given antibiotics to prevent a more serious infection like <a href="https://www.rhdaustralia.org.au/">acute rheumatic fever</a>. <h2>How long is a course of antibiotics?</h2> The recommended duration of a course of antibiotics depends on the type of infection, the likely cause, where it is in your body and how effective the antibiotics are at killing the bacteria. In the past, courses were largely arbitrary and based on assumptions that antibiotics should be taken for long enough to eliminate the infecting bacteria. More recent research does not support this and shorter courses are <a href="https://www.acpjournals.org/doi/full/10.7326/M19-1509">nearly always as effective as longer ones</a>, particularly for community acquired respiratory infections. For <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6736742/">community acquired pneumonia</a>, for example, research shows a three- to five-day course of antibiotics is at least as effective as a seven- to 14-day course. The “take until all finished” approach is no longer recommended, as the longer the antibiotic exposure, the greater the chance the bacteria will develop resistance. However, for infections where it is more difficult to eradicate the bacteria, such as tuberculosis and bone infections, a combination of antibiotics for many months is usually required. <h2>What if your infection is drug-resistant?</h2> You may have an antibiotic-resistant infection if you don’t get better after treatment with standard antibiotics. Your clinician will collect samples for lab testing if they suspect you have antibiotic-resistant infection, based on your travel history (especially if you’ve been hospitalised in a country with high rates of antibiotic resistance) and if you’ve had a recent course of antibiotics that hasn’t cleared your infection. Antibiotic-resistant infections are managed by prescribing broad-spectrum antibiotics. These are like a sledgehammer, wiping out many different species of bacteria. (Narrow-spectrum antibiotics conversely can be thought of as a scalpel, more targeted and only affecting one or two kinds of bacteria.) Broad-spectrum antibiotics are usually more expensive and come with more severe side effects. <h2>What can patients do?</h2> Decisions about antibiotic prescriptions should be made using <a href="https://www.safetyandquality.gov.au/our-work/partnering-consumers/shared-decision-making/decision-support-tools-specific-conditions">shared decision aids</a>, where patients and prescribers discuss the risks and benefits of antibiotics for conditions like a sore throat, middle ear infection or acute bronchitis. Consider asking your doctor questions such as: <ul> <li>do we need to test the cause of my infection?</li> <li>how long should my recovery take?</li> <li>what are the risks and benefits of me taking antibiotics?</li> <li>will the antibiotic affect my regular medicines?</li> <li>how should I take the antibiotic (how often, for how long)?</li> </ul> Other ways to fight antibiotic resistance include: <ul> <li>returning leftover antibiotics to a pharmacy for safe disposal</li> <li>never consuming leftover antibiotics or giving them to anyone else</li> <li>not keeping prescription repeats for antibiotics “in case” you become sick again</li> <li>asking your doctor or pharmacist what you can do to feel better and ease your symptoms rather than asking for antibiotics.</li> </ul> <a href="https://theconversation.com/profiles/minyon-avent-1486987">Minyon Avent</a>, Antimicrobial Stewardship Pharmacist, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a>; <a href="https://theconversation.com/profiles/fiona-doukas-1157050">Fiona Doukas</a>, PhD candidate, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a>, and <a href="https://theconversation.com/profiles/kristin-xenos-1491653">Kristin Xenos</a>, Research Assistant, College of Health, Medicine and Wellbeing, School of Biomedical Science and Pharmacy, <a href="https://theconversation.com/institutions/university-of-newcastle-1060">University of Newcastle</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/do-you-really-need-antibiotics-curbing-our-use-helps-fight-drug-resistant-bacteria-217920">original article</a>.

Body

Debate sparked over list of top 100 cities on the planet

The best 100 cities on the planet have been revealed, with one New Zealand city making the final list. The list was compiled by as part of an annual report by <a href="https://www.worldsbestcities.com" target="_blank" rel="noopener">Resonance Consultancy</a>, who rated major capital cities on three main factors: liveability, lovability and prosperity, with dozens of factors taken into account. These include educational attainment, GDP per capita, poverty rate, the number of quality restaurants, shops and nightclubs, walkability, the number of mapped bike routes, quality parks and museums, as well as ratings from TripAdvisor and Google. The top ten chart features four cities on the Asian continent, four in Europe and two in the U.S, while Auckland was also featured in the list, coming in at number 64. Taking out the number one spot this year is London, dubbed the "capital of capitals" that "reigns over all global cities" as the best metropolis in the world. The study proclaims it as the most liveable and the most lovable mecca, solidified by its winning culture and education attainment. The report concludes, "Despite crippling Covid lockdowns and economic devastation. Despite Brexit. Despite a war in Europe. The city is more indomitable and part of the global discourse than ever. From the Queen's death, to last autumn's chaotic drama at 10 Downing Street that finally calmed down with Rishi Sunak becoming prime minister, only to take heavy local election losses this spring, London is rarely quiet these days." Here's the full list of top 100 cities in the world. 1 - London, England 2 - Paris, France 3 - New York, USA 4 - Tokyo, Japan 5 - Singapore 6 - Dubai, United Arab Emirates 7 - San Francisco, USA 8 - Barcelona, Spain 9 - Amsterdam, Netherlands 10 - Seoul, South Korea 11 - Rome, Italy 12 - Prague, Czechia 13 - Madrid, Spain 14 - Berlin, Germany 15 - Los Angeles, USA 16 - Chicago, USA 17 - Washington, D.C., USA 18 - Beijing, China 19 - Istanbul, Turkey 20 - Dublin, Ireland 21 - Vienna, Austria 22 - Milan, Italy 23 - Toronto, Canada 24 - Boston, USA 25 - Abu Dhabi, United Arab Emirates 26 - Budapest, Hungary 27 - São Paulo, Brazil 28 - Riyadh, Saudi Arabia 29 - Stockholm, Sweden 30 - Munich, Germany 31 - Melbourne, Australia 32 - Lisbon, Portugal 33 - Zürich, Switzerland 34 - Seattle, USA 35 - Sydney, Australia 36 - Doha, Qatar 37 - Brussels, Belgium 38 - San Jose, USA 39 - Bangkok, Thailand 40 - Warsaw, Poland 41 - Copenhagen, Denmark 42 - Taipei, Taiwan 43 - Austin, USA 44 - Oslo, Norway 45 - Osaka, Japan 46 - Hong Kong, China 47 - Tel Aviv, Israel 48 - Athens, Greece 49 - Frankfurt, Germany 50 - Vancouver, Canada 51 - San Diego, USA 52 - Orlando, USA 53 - Helsinki, Finland 54 - Miami, USA 55 - Buenos Aires, Argentina 56 - Hamburg, Germany 57 - Brisbane, Australia 58 - Kuwait, Kuwait 59 - Las Vegas, USA 60 - Montreal, Canada 61 - Glasgow, Scotland 62 - Shanghai, China 63 - Rio de Janeiro, USA 64 - Auckland, New Zealand 65 - Atlanta, USA 66 - Houston, USA 67 - Busan, South Korea 68 - Philadelphia, USA 69 - Naples, Italy 70 - Denver, USA 71 - Nashville, USA 72 - Manchester, England 73 - Dallas, USA 74 - Liverpool, England 75 - Minneapolis, USA 76 - Mexico City, Mexico 77 - Minsk, Belarus 78 - Lyon, France 79 - Portland, USA 80 - Rotterdam, Netherlands 81 - Bogotá, Colombia 82 - Kraków, Poland 83 - Valencia, Spain 84 - Santiago, Chile 85 - Birmingham, England 86 - New Orleans, USA 87 - Bucharest, Romania 88 - Leeds, England 89 - Muscat, Oman 90 - Ottawa, Canada 91 - Cologne, Germany 92 - Charlotte, USA 93 - Calgary, Canada 94 - Nagoya, Japan 95 - Düsseldorf, Germany 96 - Hanoi, Vietnam 97 - Gothenburg, Sweden 98 - Sapporo, Japan 99 - Bilbao, Spain 100 - Baltimore, USA Image credits: Getty Images

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Do you really need antibiotics? Curbing our use helps fight drug-resistant bacteria

Debate sparked over list of top 100 cities on the planet