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The Science of Sound: How Innovation and Nutrition Can Enhance Your Hearing

To help his hearing-impaired wife, Hans Demant founded Oticon in 1904. Since then, <a href="https://www.oticon.co.nz/hearing-aid-users" target="_blank" rel="noopener">Oticon’s</a> legacy of care and cutting-edge technology has been transforming the experience of sound for 120 years. In real life, environments vary – some noisy, some quiet, some with speech, some without. But what you want to hear depends on your intentions, which could change in a moment. <a href="https://www.oticon.co.nz/hearing-aid-users/hearing-aids/products/intent" target="_blank" rel="noopener">Oticon Intent</a>TM hearing aids are built to detect your listening intentions^ and provide personalised hearing support in any situation*. So, you can focus on sounds that matter and access the world around you. To do this, Oticon Intent is powered by 4D Sensor technology* and a full-time second-generation Deep Neural Network (DNN) that has learned from experience. <img class="alignnone size-full wp-image-51713" src="https://oversixtydev.blob.core.windows.net/media/2024/10/Demant_History_Acousticon_Coronation_Device_1910_Model_RD_1908_Intent_120years_wide_1280.jpg" alt="" width="1280" height="533" /> Today’s ground-breaking Oticon Intent alongside an historic “Acousticon” from 1910. Some hearing solutions are complex; others are incredibly simple. While it’s important to protect our ears against ear infections and loud noises, did you know diet can play a role in preventing age-related hearing loss?1 <ul> <li>Foods rich in omega-3 fatty acids and Vitamin D, like tuna, can benefit the cardiovascular system and reduce inflammation that may damage sensitive ear tissue2.</li> <li>Foods containing antioxidants and folic acid, like spinach, may reduce risk of hearing loss by up to 20% by improving inner ear blood flow3.</li> <li>Fruit and veg rich in Vitamins C and E can strengthen the immune system, protecting blood vessels and nerves around the ears to help prevent infections.</li> </ul> By working nutrient-rich foods into your diet, you can help safeguard your hearing health for years to come. To help celebrate Oticon’s incredible 120-year milestone, we’re giving away a $400 Prezzee Gift Card! Using the information in this article, simply <a href="https://www.readersdigest.co.nz/contests/oticon-intent-120th-anniversary-giveaway" target="_blank" rel="noopener">answer the contest questions online</a> for your chance to win. For more information visit <a href="http://www.oticon.co.nz/oticon-intent" target="_blank" rel="noopener">www.oticon.co.nz/oticon-intent</a>, and to find your nearest <a href="https://www.oticon.co.nz/hearing-aid-users/find-audiologist" target="_blank" rel="noopener">hearing centre</a> visit <a href="https://www.oticon.co.nz/" target="_blank" rel="noopener">oticon.co.nz</a>. This is a sponsored article produced in partnership with Oticon. ^4D Sensor Technology only available in Oticon Intent 1 & 2. #Bianchi/Eskelund et al. (2024). Oticon IntentTM – Clinical evidence. BrainHearingTM benefits of the 4D Sensor technology. Oticon whitepaper. Sponsored by Oticon. <sup1Rodrigo, L., Campos-Asensio, C., Rodríguez, M., Crespo, I., & Olmedillas, H. (2021). Role of nutrition in the development and prevention of age-related hearing loss: A scoping review, 2021, Science Direct. 2Calder, P., Omega-3 Fatty Acids and Inflammatory Processes, 32010,National Library of medicine. Curhan, S. et al, Fish and fatty acid consumption and the risk of hearing loss in women, 2014.

Hearing

4 things you’re likely doing that are damaging your hearing

Your hearing is a precious gift, so it’s important to take good care of your ears. We’ve got some advice on the things to avoid, and what you can do to protect your hearing. Using cotton tips Though they’re commonly used for the job, cotton tips should never be used to clean out your ears. In fact, no solid object should be put inside your ears. Cotton tips account for around four per cent of all ruptured eardrums. These innocuous-looking objects can also cause bleeding, scratch your ear canal, or trigger an infection. So put them down and step away. Instead, use a commercial ear cleaner, or even just a few drops of mineral oil, baby oil, or glycerine to soften the earwax. Don’t wait and see If your hearing in one or both ears suddenly disappears without cause, you need to go and see your doctor as soon as you can. It could be inflammation, infection, or a decrease in blood supply to the area. If you need treatment, you’ll likely need it immediately to have any hope of restoring your hearing. Using eardrops without advice There are many over-the-counter eardrops available to help with things like swimmer’s ear. But in extreme cases, these products can cause deafness. Before you use anything, including a home remedy, get your doctor to check that you don’t have a ruptured eardrum. Some people may be born that way, or have had surgery as a child, or suffered an injury. If the ingredients in these drops make their way inside your eardrum, it can cause a lot of pain, and permanent deafness. Always protect your ears It’s incredibly important to protect your ears from permanent damage. Tiny hairs inside your ears act as hearing receptors, and these can be broken by extremely loud noises. Once they’re gone, they don’t come back. So things like loud music, fireworks, machinery, and artillery are all risky to be around. The best thing you can do is cover up with earmuffs whenever you’re around these things – especially if it’s on a regular basis. For extra safety, use earplugs as well. Image credits: Shutterstock

Body

The dos and don’ts of caring for your hearing aids

Proper care and maintenance of your hearing aids is important. It will ensure you to get the most out of your aids, prevent problems and maintain optimum hearing conditions. Here are some guidelines to help you care for them. DO: clean your hearing aids regularly with a dry cloth or tissue. DON’T: get your hearing aids wet. That means no wearing them in the shower or when swimming. If they happen to get wet, dry it off immediately. DO: put your hearing aids in their case when you’re not using them DON’T: wear your aids when using aftershave, hairspray, perfume, sunscreen, insect repellent and so on. They contain chemicals that could damage it. Allow time for drying before putting back on hearing aids. DO: use a moisture protection kit/anti-humidity kit. They help with moisture problems (which can affect performance of hearing aids) and extend life of hearing aids. DO: keep out of reach of pets and visiting grandkids. Dogs have been known to chew them up and if swallowed by either pet or grandkid, can be very dangerous. DON’T: expose your device to extreme heats. Don’t leave them in a parked car, near a heater or wear while using a hairdryer. DO: Store your hearing aid in a safe place that's dry and cool. DON’T: leave your hearing aids switched on when you’re not using them. DO: change batteries often so you won’t be stuck with aids that have suddenly run out of power. DON’T: ever insert anything into the sound outlet as it could damage the receiver. If you can’t clean it properly, ask your hearing professional. DO: remove any earwax that gets into your hearing aid. It could cause permanent damage. Image credits: Getty Images

Hearing

What if there was a hearing aid that understood your listening intentions?

<div class="page" title="Page 1"> <div class="section"> <div class="layoutArea"> <div class="column">Hearing conversations in noisy environments can be especially hard for people with impaired hearing. Unfortunately, traditional hearing aids adopt a ‘one-size-fits-all’ approach to processing sounds, regardless of the listening needs of individual users. This may make listening and engaging with others more difficult. Users may also experience a lack of sound clarity and be reluctant to engage in conversations with others.</div> <div class="column"> </div> <div class="column">Hearing aid manufacturer <a href="https://www.oticon.co.nz/hearing-aid-users" target="_blank" rel="noopener">Oticon</a> is taking the next important step on the journey to solve the No.1 challenge for people with hearing loss – hearing speech in noise2. With new groundbreaking 4D Sensor technology, <a href="https://www.oticon.co.nz/hearing-aid-users/hearing-aids/products/intent" target="_blank" rel="noopener">Oticon Intent</a> is capable of understanding the user’s listening intentions by recognising what they want and need to listen to, in order to deliver truly personalised support.</div> <div class="column"> </div> <div class="column">The Brain And Sound</div> <div class="column"> </div> <div class="column">Our ears gather the sounds around us, but the true hero in sound processing is the brain, as it is constantly working to make sense of sound. Oticon uses their BrainHearingTM philosophy to develop technology that provides the brain with access to the full sound environment.</div> <div class="column"> </div> <div class="column">The latest <a style="font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;" href="https://www.oticon.co.nz/hearing-aid-users/hearing-loss/understand-hearing-loss/how-hearing-works" target="_blank" rel="noopener">BrainHearingTM</a> insights reveal that people’s communication behaviour reflects their listening needs and intentions at a given moment via head and body movements. In conversation, users tend to keep their heads still to engage with a single person or move their heads in a group conversation to engage with different people. When struggling to hear what someone is saying, users are likely to lean in to listen.</div> <div class="column"> </div> <div class="column">The technology in Oticon Intent understands and adapts to the user through sensors that monitor head and body movements, conversation activity and the acoustic environment. Oticon Intent helps users move beyond just hearing and listening, helping them to communicate and fully engage in life.</div> <div class="column"> </div> <div class="column">Ease Of Communication</div> <div class="column"> </div> <div class="column">In challenging, noisy environments, Oticon Intent makes it possible to: <div class="page" title="Page 1"> <div class="section"> <div class="layoutArea"> <div class="column"> <ul> <li>Move through a crowd with seamless awareness, while orienting to the surrounding sounds.</li> <li>Begin chatting with a group of people, thanks to heightened access to voices and balanced background sounds so they are not intrusive, while still accessible.</li> <li>Start an intimate conversation with one person, easily hearing the speaker’s voice amid the noise all around.</li> </ul> </div> </div> </div> </div> </div> </div> </div> </div> <img class="alignnone size-full wp-image-50989" src="https://oversixtydev.blob.core.windows.net/media/2024/03/Oticon_Intent_HA_In_Hand_Hero3_KC_1321_Expires_On_2_8_2029_1280.jpg" alt="" width="1280" height="720" /> Engage More In Life “If you have a hearing loss, you can actually protect your brain from cognitive decline by using active hearing aids which enable you to connect with others and let you engage in life to the fullest,” says Thomas Behrens, Vice President of Audiology at Oticon. “You can also enjoy future-proof, next- generation connectivity technology, crafted into the smallest form factor we have designed to date within this category.” Open Up The Digital World Offering easy connection to compatible smart devices through Bluetooth® Low Energy technology, Oticon Intent also enables users to engage in the digital world like never before. It allows a detailed, high-quality sound experience for hands-free calls and delivers direct streaming of music, audio book and much more3. With up to 20 hours of battery life, users will never have to worry about running out of battery. When they need a recharge, they’d simply drop the hearing aids into the charger for just 30 minutes for up to 8 hours of battery life4. Your hearing matters. Take a step towards better hearing by contacting your nearest <a href="https://www.oticon.co.nz/hearing-aid-users/find-audiologist" target="_blank" rel="noopener">hearing care professional</a>. To explore this revolutionary hearing aid that helps users to engage in life like never before, visit <a href="https://www.oticon.co.nz/oticon-intent" target="_blank" rel="noopener">www.oticon.co.nz/oticon-intent</a> For more information and to find your nearest hearing clinic, visit <a href="https://www.oticon.co.nz" target="_blank" rel="noopener">oticon.co.nz</a> *4D Sensor technology only available in Oticon Intent 1 & 2. [2.] Jorgensen, L., & Novak, M. (2020). Factors Influencing Hearing Aid Adoption. Seminars in hearing, 41(1), 6–20. [3.] Hands-free communication is available on select devices. See which hearing aids and devices are compatible here: oticon.co.nz/compatibility. [4.] Expected use time for rechargeable battery depends on use pattern, active feature set, hearing loss, sound environment, battery age and use of wireless accessories. Images: Supplied. This is a sponsored article produced in partnership with Oticon.

Hearing

"Do you hear it?": Worldwide hum global mystery baffles scientists

A perplexing phenomenon known as "The Worldwide Hum" has been capturing the attention of scientists and citizens alike, as an unusual low-frequency noise continues to puzzle experts. This mysterious hum, first recorded in 2012, has been reported by thousands of people worldwide, sparking investigations, online discussions and even <a href="https://www.thehum.info/" target="_blank" rel="noopener">the creation of an interactive map</a> documenting instances of the enigmatic sound. As researchers strive to unravel the mystery, individuals share their experiences, raising questions about its origin and effects. Described as a low rumbling or droning sound, "the hum" is often likened to the idling of a car or truck engine. What makes this phenomenon particularly intriguing is that it is not universally heard, with reports of the hum being exclusive to certain individuals. Some claim it is more pronounced at night than during the day, and louder indoors than outdoors. One Reddit user even compared it to the low-frequency vibrations felt when a passenger jet flies overhead. Since its first documentation, more than 6,500 instances of the hum have been reported globally, with new cases continually emerging. The interactive user-generated World Hum Map and Database Project captures the experiences of those who have encountered the sound, providing a comprehensive overview of its widespread occurrence. In some regions, authorities such as the Environment Protection Authority (EPA) have conducted investigations, as was the case in the NSW Waverley Council ten years ago. Despite these efforts, the source of the hum remains elusive. Individuals affected by the mysterious noise often find solace in online communities, where they share their experiences and discuss possible explanations. Some describe feeling as though they are "going insane", and say that the psychological impact of the persistent hum is actually very severe. Facebook support groups have become a platform for individuals to connect, share anecdotes and speculate about the origin of the sound. Theories range from the mundane – such as the use of headphones causing collective tinnitus – to more complex environmental factors. While tinnitus, a symptom of auditory system issues, has been proposed as a potential explanation, it does not account for the collective experience of the hum. Various theories, including industrial plants, ocean waves, lightning strikes and the proliferation of mobile phone towers, have been suggested over the years. However, none of these explanations have gained widespread acceptance or provided a conclusive answer. Dr Glen MacPherson, who initiated the World Hum Map and Database Project, experienced the hum firsthand on Canada's Sunshine Coast. Having debunked the idea of "hum hotspots", Dr MacPherson theorises that the hum may be a subjective phenomenon, akin to tinnitus, originating from within the individual rather than an external source. His 11 years of research highlight the complexity of the mystery, challenging initial assumptions and pointing towards the need for further investigation. As "The Worldwide Hum" continues to captivate the curiosity of scientists and citizens worldwide, the quest for understanding remains elusive. While theories abound, the true origin of the hum remains unknown, leaving both experts and individuals alike intrigued by a phenomenon that transcends geographic boundaries and defies conventional explanations. Image: Getty

Body

The path to better hearing, today

In 1902, Princess Alexandra of Denmark, who would very soon become Queen Consort of the United Kingdom alongside King Edward VII, found herself enraptured by a fascinating new device that was fast becoming the talk of Europe. The young princess had been fitted with one of the world’s first portable electric hearing aids, and it proved to be a life-changing success. Back in Denmark, the impact of this event became a clarion call to one Hans Demant, a bicycle manufacturer and purveyor of sewing machines. His wife, Camilla, also suffered from severe hearing loss and so, after a determined journey to London, Hans returned with a precious electric “Acousticon”. Witnessing Camilla’s progress served as a source of inspiration for Hans to extend his assistance to a broader community of individuals suffering with hearing loss, and so he initiated the import of hearing devices from America. In 1904, Hans Demant founded the company that would later become known as <a href="https://www.oticon.co.nz/">Oticon</a>, a name now synonymous with cutting-edge hearing solutions, paving the way for the modern hearing aids we know today and bringing new-found joy to millions worldwide. <h3>Hearing health</h3> Hearing health is a such critical aspect of our overall well-being, yet it often goes overlooked until problems arise. In New Zealand, hearing issues affect a surprisingly large portion of the population, with a 2022 EHIMA report estimating as many as one in ten New Zealanders are living with hearing loss. Sadly, a lack of awareness can lead to irregular hear- ing check-ups, which in turn leads to delayed diagnosis and treatment. <h3><img class="alignnone size-full wp-image-50616" src="https://oversixtydev.blob.core.windows.net/media/2023/11/miniRITE_R_H1-2023_RightLeft_C090ChromaBeige_LEDgreen_Speaker60_OpenBassDome_500pctSize_w_shadow_1280.jpg" alt="" width="1280" height="642" /></h3> <h3>A new world of sounds</h3> A far cry from the bulky hearing aids of over a century ago that were hailed as a miracle in the press and transformed Queen Alexandra’s life, the pinnacle of today’s devices – such as <a href="https://www.oticon.co.nz/hearing-aid-users/hearing-aids/products/real" target="_blank" rel="noopener">Oticon Real™ hearing aids</a> – continue to change the way we experience the world of sound. With their advanced processing capabilities and state-of-the-art technology, Oticon Real can help get back the real sounds of life, precise and optimally balanced, whether it’s the laughter of grandchildren, musical notes or simply the rustling of leaves in the wind. One of the standout features of Oticon Real hearing aids is a unique technology called Deep Neural Network (DNN). This built-in intelligence has learned to recognise all types of sounds, their details, and how they should ideally sound. This means they can instantly adapt to changes, keeping you at your best wherever life takes you. By analysing and adjusting to your environment, Oticon Real hearing aids ensure that they provide what you need to hear. They do this by reducing background noise, which can help enhance speech comprehension and allow you to engage effortlessly in conversations, even in noisy settings. <h3>Connection is key</h3> In today’s digital age, connectivity is paramount, and Oticon Real hearing aids certainly rise to the challenge, offering seamless connectivity to compatible* smartphones and other Bluetooth-enabled devices. You can effortlessly stream phone calls, music and other audio directly to your hearing aids, vastly enhancing your listening experience. <h3><img class="alignnone size-full wp-image-50617" src="https://oversixtydev.blob.core.windows.net/media/2023/11/Oticon_Real_Still_Life_miniRITE_R_Wallet_JBS_24873_1280.jpg" alt="" width="1280" height="863" /></h3> <h3>Improved quality of life</h3> Perhaps the most significant benefit of Oticon Real hearing aids is their positive impact on your quality of life. Improved hearing can lead to increased social engagement, better relationships and enhanced overall well-being. With the help of Oticon Real, you can participate more actively in social gatherings, make the most of your favourite activities and feel more connected to the world around you. Oticon Real hearing aids aren’t just devices; they are a life-changing gift that allow you to reconnect with the sounds and people you love. No longer are they fit just for a queen; they are readily available to anyone with the need and the longing to be truly present for life’s most cherished moments. For more information and to find your nearest hearing clinic, visit <a href="https://www.oticon.co.nz/" target="_blank" rel="noopener">oticon.co.nz</a> *For information on hearing aid and device compatibility, visit <a href="https://www.oticon.co.nz/compatibility" target="_blank" rel="noopener">www.oticon.co.nz/compatibility</a> <img class="alignnone size-full wp-image-50618" src="https://oversixtydev.blob.core.windows.net/media/2023/11/Oticon_Real_miniRITE_R_9_colors_lineup_1280.jpg" alt="" width="1280" height="125" /> All images: Supplied. This is a sponsored article produced in partnership with Oticon.

Hearing

"Death was a blessing": Why father was glad to hear his daughter was killed

A devastated, recently widowed father has revealed why he was relieved his eight-year-old daughter was killed by Hamas terrorists in Israel. Thomas Hand, an Irish-born father who moved to Israel 30 years ago, tearfully told CNN that he welcomed the news that his daughter, Emily, had been killed quickly by Hamas, because it was better than being taken hostage and tortured by the terrorists. Mr Hand was already grieving the loss of his wife, who died of cancer in recent years, when his daughter was killed during the conflict between Israel and Palestine. In the heartbreaking interview, Mr Hand broke down in tears as he recounted the moment he was finally told his daughter's body had been found, and said his reaction was one of relief that she had not been kidnapped instead. He said in a shaking voice, "They just said we found Emily, she's dead and I went, 'yes'. I went, 'yes' and smiled because that is the best news of the possibilities that I knew." <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-permalink="https://www.instagram.com/reel/CySvzswoJFb/?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/reel/CySvzswoJFb/?utm_source=ig_embed&utm_campaign=loading" target="_blank" rel="noopener">A post shared by CNN (@cnn)</a> </div> </blockquote> "That was the best, possibly that I was hoping for. She was either dead or in Gaza. And if you know anything about what they do to people in Gaza, that is worse than death." "That is worse than death. The way they treat you. They'd have no food, they'd have no water." He continued, "She'd be in a dark room filled with Christ knows how many people and terrified every minute, hour, day and possible years to come." "So, death was a blessing, an absolute blessing." Recounting the savage attack, Mr Hand said, "I had to think of Emily. She already lost her mother, I couldn't risk her losing her father too." Revealing harrowing details of events surrounding the attack, he shared why he survived and his daughter did not. "She doesn't do it very often, but unfortunately that night, that particular night - Friday night - she went to sleep at her friend's house." The following morning, Hamas attacked the kibbutz where Emily was staying, killing at least 100 civilians and taking hostages to Gaza. Image credits: CNN

Family & Pets

These 11 simple everyday things could be ruining your hearing

Protect your ears You know a leaf blower can do a number on your hearing or a loud rock concert can make your ears ring for days. But there are all sorts of surprising everyday items that can have an impact on your hearing, and you don’t want to wait until you’re collecting Social Security to take action – Millennials are losing their hearing, too. From your kitchen to your yard, your medicines to your health conditions, here are things that affect your ears. Take a listen. Blood-related conditions Types 1 and 2 diabetes, high blood pressure and high cholesterol affect almost every cell in the body – including the ears. Vibrations from tiny hair cells in your ears send your brain messages about what you’re hearing, but those cells need proper blood flow. “All those hair cells are fed nutrients by tiny little capillaries,” says audiologist Craig A. Kasper. “If there’s any problem with blood flow, you’re not going to get those hair cells to grow.” People who have diabetes, for instance, are twice as likely to experience hearing loss than the rest of the population, he says. Blow-dryers A hairdryer near your head could be putting out 85 or more decibels of noise. Long or repeated exposure to sounds at or above 85 dB is when people are at risk of hearing loss, says the US National Institutes of Health. You’d probably have to dry your hair for eight hours straight before it did any damage, but that loud part of your beauty regime could add up over time, says clinical audiologist Kit Frank. “The more you use [blow-dryers] and the longer you use them, the more likely you are to have damage,” she says. “It might not do immediate damage, but over time it will.” Loud music You know what it was like when you came home after a loud concert: The ringing in your ears was a sure sign the music was too loud. But even the tunes coming through your headphones could damage your ears. Earbuds are typically more damaging than over-the-ear headphones because they rest deeper in your ear canal, says Frank. And if you crank up the volume to drown out the noise around you, things get even riskier, says Kasper. “You typically have to compete with the environmental noise to hear the music,” he says. “That’s when it becomes dangerous.” Sticking with volume at or below 60 per cent will keep the sound at a safe level, he says. If you can’t hear at that volume, buy sound-blocking headphones to cut out the outside noise. Skipping your annual check-up Most hearing loss comes from gradual damage to your inner ear, but blockages are totally treatable. During your annual visit to your GP, your doctor should check the inside of your ears for wax build-up. Skip that check-up and you might end up with clogged earwax muffling your hearing, says Frank. But you might also get stuffed-up ears after a specific event, says Kasper. “It could be someone has a history of sinus infections or allergies, or just took multiple plane rides and their ears are clogged,” he says. “It makes us feel like we’re underwater." Prescriptions Hearing loss could be a side effect of your medication. Some diuretics for heart disease, chemotherapy and antibiotics (especially gentamicin, neomycin, and others in the -mycin family) could damage your ears. Getting better is your first priority, but it’s worth talking to your doctor about whether the dose is high enough to do damage. “High doses of any antibiotic can be dangerous,” says Frank. “Usually myacins are used in high doses.” Over-the-counter pain relievers Even pain relievers you get over the counter, like aspirin and ibuprofen, could do damage in high amounts. Any hearing loss or tinnitus from them is usually temporary, but the side effects are sometimes permanent. As long as you stick with baby aspirin or regular doses of a pain medication, though, you won’t risk ruining your hearing, says Kasper. High fever As if a high fever weren’t bad enough, that elevated temperature could also damage the nerves in your inner ear, either because of inflammation or lack of oxygen. “If you don’t get that oxygen to the nerves, they break down and they don’t work like they should,” says Frank. Exercise classes Exercise classes are often very loud. The music blasting at your group workout might power you through your sweat session, but it might be working your ears in a bad way. “If you walk out of spin classes and your ears are buzzing, that’s an indication that you may have done damage to your ears,” says Kasper. Download an app to your smartphone to measure the sound level around you throughout your day, he recommends. Consider using hearing protection if your fitness centre is particularly noisy. Kitchen appliances Noisy appliances like blenders and coffee grinders could do damage to your ears over time. The more often you get those noisy blades going, the more trauma your ears go through. Hard-core chefs should consider ear protection, though the occasional smoothie isn’t anything to worry about. “If you’re in the kitchen and cooking and using a blender all day, that’s a problem,” says Frank. “If you use it for ten seconds once a week, it probably won’t be a problem for you.” Power tools The racket from lawnmowers, jackhammers, leaf blowers, drills and other power tools isn’t just a headache, it also risks hearing damage. You’ll need to protect your ears, but earplugs might not be the best choice. Putting fingers grimy from the tools so close to your ear canal could put you at risk for infection, says Kasper. Instead, pick up a pair of earmuffs from the hardware store. “They go right over the ear, and they’re easy to take on and off,” Kasper says. Your commute Public transport can be noisy, and sitting on a train or bus for half an hour to and from work could add up over time and hurt your ears, says Frank. Plus, the siren of an emergency vehicle passing you on the street could be loud enough to do some damage. “Covering your ears is a good thing – it’s not silly,” says Frank. Image credits: Shutterstock This article originally appeared on <a href="https://www.readersdigest.co.nz/healthsmart/conditions/hearing/listen-up-11-surprising-things-that-could-ruin-your-hearing?pages=1" target="_blank" rel="noopener">Reader's Digest</a>.

Body

Survey reveals over a third of us are neglecting our hearing

A survey conducted by hearing healthcare group Audika - and hosted by Decibel Research - has revealed the hard truth that Australians just aren’t keeping on top of their hearing. Research even found that for 88% percent of respondents - 1,020 individuals over the age of 40 - the thought of losing their eyesight was a bigger concern than losing their hearing. People had a whole host of reasons, but most circled back to the stigma that surrounds hearing loss - they feared that hearing aids would make them look older, or that they might be too uncomfortable, or even that they’re simply too expensive for the average person, despite 37% of those surveyed admitting that they would probably benefit from one. 34% - roughly one third of the participants - confessed that they probably do have difficulty hearing, but have never undergone testing or sought out any sort of treatment. Meanwhile, 61% admitted that the chances of them partaking in a hearing test in the following 12 months were slim to none. Even more concerning were the 51% - over half of those surveyed - said that they would put off wearing a hearing loss “as long as possible”, even to their own detriment. Their minds wouldn’t change even if they received a hearing loss diagnosis. And this is all despite 69% of those with hearing loss reporting that their lives had been negatively impacted, from 35% citing their personal relationships as the area of concern to 35% noting their social life in general, and 19% looking to their career. Those same respondents shared that they have experienced difficulty communicating and that others don’t always understand them, often withdrawn from various events, and have faced a lack of confidence in navigating social situations. None of which can have been helped by the jokes from loved ones that a quarter of them also reported. It is more important than ever to address these statistics, and to overcome the stigma that surrounds hearing loss, as the World Health Organisation has estimated that by 2050, 1 in every 4 people around the world will experience hearing loss of some degree. On top of this, it’s believed that up to one third of the world’s population may be both undiagnosed and consequently untreated. Luckily for us, preventative measures can be taken, and the first - and arguably most important step - is to take our hearing health seriously, and make the necessary changes that will benefit us in the long run. The importance of taking such measures cannot be stressed enough, from managing symptoms all the way to preventing other “serious health conditions”. As Audika’s Audiologist and Clinical Trainer Lauren McNee put it, “poor hearing, if untreated, is linked to a number of other health conditions including mental health challenges. “The results of the recent survey indicate that Aussies don’t seem to be aware of how common hearing loss can be. They also appear to be unaware of the serious daily impacts that are felt by people that are hard of hearing, and their loved ones. “Unfortunately, stigma surrounding hearing health is still prevalent across our society – yet more than half (51%) of the survey respondents said that they have a loved one that experiences it. “With greater understanding of the impacts of hearing loss and compassion for each other, we can work towards more open conversations around hearing loss and encourage those we care about to be more proactive with their hearing health.” To help Australians on their way towards a better hearing future, Audika are encouraging people over the age of 26 to head out, learn to ‘Love Your Ears’, and visit an Audika clinic for a free hearing check. And for those who’d prefer to do it from the comfort of home, you can head over to <a href="https://www.audika.com.au/online-hearing-test">Audika’s five-minute online hearing check</a>. For more information, visit <a href="https://www.audika.com.au/">Audika’s official website</a>. Images: Getty

Body

"I can't hear you!": New feature set to do away with subtitles

Nothing is more annoying than sitting in front of your TV, eager to watch your favourite show only for the dialogue to be completely wiped because of cars passing by or a plane taking off. Not being able to hear the dialogue in a TV show or movie, especially in an action or crime-driven blockbuster where anything exploding masks all dialogue has been an everlasting problem for viewers. Netflix has revealed that 40 per cent of subscribers have subtitles on at all times while surveys in the US and UK saw anywhere between 60 and 70 per cent of young viewers as frequent users of subtitles. If you’re using subtitles for the purpose of hearing the dialogue rather an accessibility reasons, streaming giant Amazon is introducing a new feature that could eradicate the need to turn them on because of the sound mix. The feature is called ”dialogue boost" and it raises the volume of the dialogue track relative to the score, ambient sound or effects. Although Amazon has so generously offered this solution to subscribers, the dialogue boost feature will only be available on a handful of Amazon Prime Video’s originals, like Beautiful Boy, Being The Ricardos, Jack Ryan and The Marvelous Mrs Maisel. A similar feature already appears on some expensive sound systems and TV sets, but Amazon boasts it’s the first streaming platform to roll it out worldwide. To work the feature, select it from the audio and subtitles drop-down menu on an individual title, there will be two options to select from, “English Dialogue Boost: High” or “English Dialogue Boost: Medium”. The title page for a TV series or movie will show whether the dialogue boost is available. According to Variety, the helpful feature was originally designed for hearing-impaired viewers. Rest assured, if you struggle to hear the dialogue due to the sound mix, there's help on the way, granted it's exclusive to Amazon. Image credit: Shutterstock

3 things to consider when travelling with hearing loss

Hearing loss is a challenge, but with some preparation your holiday can go off without a hitch. Here are five ways to manage hearing loss while travelling. 1. While you’re at the airport If you think you’re going to require assistance boarding the plane or during your flight, it’s a good idea to inform your airline at least 48 hours before boarding. It’s also a good idea to ask staff to inform you personally when the plane is ready to board, or stand near the boarding desk as it might be difficult to hear announcements over the loudspeaker. 2. While you’re on the plane Cabin crew are generally well trained to cater for travellers with hearing loss, but it’s a good idea to explain your difficulties as you’re boarding. That way they can keep you informed of any important messages on your trip regarding delays or even emergencies. Some airlines will even board you first, and provide you with an individual safety briefing. 3. When you arrive at your destination There’s a few things to consider when you reach your destination, but it’s generally a good idea to make sure you have enough batteries for your trip with a few spare ones thrown in. It’s generally a good idea to bring a decent supply (better to take too many than too few) and spread them out over too bags in case one of them is lost in transit. Also, if you’re travelling anywhere that’s humid or tropical it might also be an idea to pack a dehumidifier pack to minimise the change of corrosion of the device. Image credits: Getty Images

Travel Tips

5 sounds you hear on the plane explained

Nervous fliers know just how freaky a sudden noise on the plane can be, but we’ve broken down the most common ones you’ll hear and what they mean so you can travel with ease. <ol> <li>The puff of air at the gate – it’s usually one of the first unsettling sounds you’ll hear on the plane, but it’s one of the most important – it signals that the ventilation on the plane has been switched on. It’s also why lights can tend to flicker, as the plane is moving from an off-board power source to an onboard system.</li> <li>The “bark” during taxi – before take-off and landing, it’s normal for the plane to make a sort of “barking” noise. This is just the hydraulics kicking in, ensuring steering, braking and air pressure are all at optimum levels for a safe departure or arrival.</li> <li>The wings “whirring” – upon take-off and even during flight, you may hear a “whir” coming from the wings. This sound indicates the wingspan is expanding and retracting to help assist take-off and speed maintenance.</li> <li>The “bang” from the belly of the plane – this noise can be pretty scary as you make your descent into your destination, but it’s completely safe. All it means is the landing gear is being released so you can arrive safely.</li> <li>The brakes “screeching” – don’t be alarmed by this sound, it’s just the plane’s natural response to landing at the speed of 160 to 240 kph while carrying hundreds of tonnes of cargo and passengers.</li> </ol> Image: Getty

Travel Tips

5 interesting facts about how we hear

The cochlea is the most complex part of the ear, responsible for turning sounds waves into what we perceive as “hearing”. Here are five more facts about this amazing organ. 1. The cochlea turns sounds into “hearing” The cochlea receives sounds in the form of vibrations and converts them into nerve impulses. These impulses are sent to the brain to be translated into sounds that we recognise and understand. 2. The cochlea is the size of a pea Located in the inner ear, the cochlea looks like a snail shell (cochlea is Greek for snail) and is only the size of a pea. Yet within the small pea is everything needed to turn sound vibrations into hearing. 3. There are over 20,000 nerve cells in the cochlea There are approximately 24,000 hair fibres in the cochlea, which are essential to hearing. If these hair cells become damaged, hearing impairment occurs. 4. Cochlear implants directly stimulate auditory nerve A cochlear implant bypasses damaged hair cells in the cochlear to provide direct stimulation to the auditory nerve. 5. The cochlea can’t heal The cochlea cannot heal so damage done to your ear when younger can affect you later in life. It can be damaged by immune reactions, disease, drugs, chemicals, toxins, loud sounds, physical impact and ageing. Image credits: Getty Images

Body

Pumping loud music is putting more than 1 billion young people at risk of hearing loss

Music is an integral part of human life. It’s all around us, just like sunshine, lifting our mood. We enjoy it so much that many of us take it with us everywhere on our phones or we spend weekends hitting the club scene, live-music venues or concerts. Meanwhile, many of us may have felt annoyed by loud sound from music venues or remarked on sound emanating from someone else’s headphones. We’re probably aware we should prevent hearing loss from loud industrial noise at work or from using power tools at home. A systematic review released today in <a href="https://globalhealth.bmj.com/lookup/doi/10.1136/bmjgh-2022-010501">BMJ Global Health</a> reports unsafe listening practices in adolescents and young adults from using personal listening devices (such as phones or digital music players) and going to loud clubs and gigs are common, and could be a major factor contributing to hearing loss. In fact, the authors estimate the pumping tunes could be placing up to 1.35 billion young people at risk of hearing loss worldwide. <h2>What the study looked at</h2> Systematic analysis involves looking across multiple studies to identify consistent findings. In this study, the authors included 33 peer-reviewed studies published between 2000 and 2021, involving over 19,000 people, aged 12–34. In the study, unsafe listening was identified as listening at levels above 80 decibels for over 40 hours per week. For context, this is the level above which most Australian states <a href="https://www.safeworkaustralia.gov.au/safety-topic/hazards/noise/overview#:%7E:text=Workers%20must%20not%20be%20exposed,on%20decibels%20and%20time%20exposed.">require industry</a> to implement noise protection processes such as use of hearing protectors. The study confirms the rate of unsafe listening practices is high in adolescents and young adults: 23.81% of them were listening to music on personal devices at unsafe levels and 48.2% at loud entertainment venues (though this rate is less certain). Based on global estimates of population, this translates to up to 1.35 billion young people at risk of hearing loss globally. The World Health Organization <a href="https://www.who.int/health-topics/hearing-loss#tab=tab_1">estimates</a> over 430 million people worldwide already have a disabling hearing loss and prevalence could double if hearing loss prevention is not prioritised. The results tally with our previous studies conducted by Australia’s National Acoustic Laboratories and HEARing Cooperative Research Centre. More than a decade ago we <a href="https://acc.hearingservices.gov.au/wps/wcm/connect/hso/f1f6299d-96f3-408e-be4b-0775af6d7f41/Lifetime_profile_exposure_sound_what_safe_HLPP2.pdf?MOD=AJPERES">reported</a> a high potential for hearing loss from attendance at nightclubs, pubs and live concerts in young Australians aged between 18–35 years. Back then, we found 13% of young Australians (aged 18–35) were getting a yearly noise dose from nightclubs, concerts and sporting activities that exceeded the maximum acceptable dose in industry. In 2015, the WHO launched the <a href="https://www.who.int/activities/making-listening-safe">Make listening Safe</a>initiative to encourage young people to protect their hearing. <h2>Why it’s bad for your hearing</h2> So what’s the problem with loud music? Like sunshine, overexposure can lead to harm. Loud noise, including music, can <a href="https://www.cdc.gov/nceh/hearing_loss/how_does_loud_noise_cause_hearing_loss.html">kill off hair cells and membranes</a> in the inner ear (the cochlea). Once hearing is lost, a person mightn’t be able to hear or understand speech or sounds around them. <a href="https://www.nidcd.nih.gov/health/noise-induced-hearing-loss">Research</a> shows hearing loss results from a combination of sound being too loud (and it doesn’t need to be painful to cause hearing damage), listening to loud sound too long (and the louder the sound, the less time you can listen before your hearing is at risk) and how often you are exposed (and hearing damage is cumulative over time). A good “rule of ear” is that if you hear ringing in your ears at or after listening, you are at risk of damaging your hearing. This type of hearing loss is <a href="https://www.cdc.gov/nceh/hearing_loss/how_does_loud_noise_cause_hearing_loss.html">permanent</a> and may require use of hearing aids or cochlear implants. <h2>Wait, so no loud music at all?</h2> So what can we do, short of throwing away our headphones and avoiding clubbing and live music? First, just like with the sun and skin, we need to be aware of the risks to our hearing and take the necessary steps to protect ourselves. We need to be aware of how loud sound is around us and how to keep our exposure within safe levels. We can do this by using personal hearing protection in clubs (such as <a href="https://www.nytimes.com/wirecutter/reviews/best-earplugs-for-concerts/">ear muffs or ear plugs</a> that are fit for purpose), or limiting how often we visit noisy music venues or how long we stay at really loud ones. In Australia, people can access a free <a href="https://knowyournoise.nal.gov.au/">noise risk calculator</a> to calculate their personal risk using an online sound level meter, and to explore how changes in lifestyle could protect their hearing while still allowing them to enjoy music. Most phones now come with software that can <a href="https://www.headphonesty.com/2022/03/iphone-headphone-safety/#:%7E:text=Key%20features%20of%20the%20iPhone%20Headphone%20Safety%20feature&text=According%20to%20the%20WHO%20standard,risk%20of%20sustaining%20hearing%20damage.">monitor safe listening levels</a> and limit exposure. Hearing protection at the venue level is more challenging and may require regulatory and industry-based approaches. Our <a href="https://academic.oup.com/annweh/article/64/4/342/5811673">2020 research</a> identified hazard controls for entertainment venues, such alternating volume between louder and softer levels, rotating staff, providing quiet rooms, and raising speaker locations above head height. We also showed DJs and venues were open to initiatives aimed at reducing the risk of hearing loss for their patrons and <a href="https://www.tandfonline.com/doi/abs/10.1080/19338244.2020.1828241?journalCode=vaeh20">staff</a>. Compromises are possible and they could enable enjoyment of music at live-music venues, while still protecting hearing. That way everyone will be able keep enjoying music for longer. Image credits: Getty Images This article originally appeared on <a href="https://theconversation.com/pumping-loud-music-is-putting-more-than-1-billion-young-people-at-risk-of-hearing-loss-194537" target="_blank" rel="noopener">The Conversation</a>.

Music

Drop that bass (below the level of human hearing) to get bodies on the dance floor moving

People dance nearly 12% more when music includes very low frequency bass but researchers have found that it may be the sounds we don’t hear that gets our toes tapping. This is interesting news for those who’ve had an experience at a party, celebration or club when the music’s groove just isn’t making your body move and who might be tempted to reach for the nearest beverage to lubricate our joints. But maybe there’s a solution which is more subtle – and less liable to cause headaches the next day… It seems, as Meghan Trainor correctly observed in 2014, that it really is “All About That Bass.” Now, it is no revelation that bass-driven music is good for a boogie. Trainor certainly wasn’t the first to discover this critical component of the rhythm section. Researchers from Canada and Germany turned a live electronic music concert into a lab study, to find out how different qualities of music influence the body. Their results are <a href="https://doi.org/10.1016/j.cub.2022.09.035%20" target="_blank" rel="noreferrer noopener">published</a> in Current Biology. The researchers introduced over speakers levels of bass below human hearing levels. This super low pitch infrasound is made up of wavelengths of sound too long for our ears to pick up. Infrasound is common in whale song and other parts of the animal and natural world. Monitoring the crowd’s movements, the scientists found that people danced 11.8% more when the very low frequency bass was present. “I’m trained as a drummer, and most of my research career has been focused on the rhythmic aspects of music and how they make us move,” says first author Daniel Cameron, a neuroscientist from Canada’s McMaster University. “Music is a biological curiosity – it doesn’t reproduce us, it doesn’t feed us, and it doesn’t shelter us, so why do humans like it and why do they like to move to it?” Cameron and colleagues treated participants in the study to a 45-minute live set by electronic musical duo Orphx at LIVELab, a research theatre at the University. Donning motion-sensing headbands, the concert-goers’ dance moves were monitored. They were also asked to fill out survey forms before and after to ensure they didn’t detect the infrasound, to measure their enjoyment, and examine how the music felt physically. Turning the ultra-low bass playing speakers on and off every two minutes, the researchers found movement increased by 12% when the speakers were on. Vibrations experienced through touch and interactions between the inner ear and brain are closely linked to the motor system. The researchers theorise that there is a neurological link between these physiological processes and music. They believe that our anatomy can pick up on low frequencies, affecting our perception of “groove”, spontaneous movement and rhythm. Cameron suggests that the super-low frequencies may influence the vestibular system which controls body position and movement through the inner ear. “Very low frequencies may also affect vestibular sensitivity, adding to people’s experience of movement. Nailing down the brain mechanisms involved will require looking the effects of low frequencies on the vestibular, tactile, and auditory pathways,” says Cameron. Image credits: Getty Images  <img id="cosmos-post-tracker" style="opacity: 0; height: 1px!important; width: 1px!important; border: 0!important; position: absolute!important; z-index: -1!important;" src="https://syndication.cosmosmagazine.com/?id=222462&title=Drop+that+bass+%28below+the+level+of+human+hearing%29+to+get+bodies+on+the+dance+floor+moving" width="1" height="1" />  <div id="contributors"> This article was originally published on <a href="https://cosmosmagazine.com/people/bass-dance-more/" target="_blank" rel="noopener">cosmosmagazine.com</a> and was written by Evrim Yazgin. </div>

Music

What to do if your hearing aids get wet

Like most electronic devices hearing aids should be kept clear of water but if you do happen to forget to take them off before showering or jumping in the pool, here’s what you should do if your aids get wet. The first step is to switch off your hearing aids and remove the battery. Keeping a wet battery inside your aid can further damage the device so it’s best to throw out waterlogged batteries. However, if that’s not an option carefully dry the battery with a cloth. For the hearing aids, here are some home methods to drying them: <ul> <li>Shake the hearing aids with the battery compartment open to remove any excess water. Leave aids on newspaper to air dry indoors for at least a day.</li> <li>Place wet hearing aids near a lamp can speed up drying process, but do not place too close to light bulb as too much heat can damaged the device.</li> <li>Stick hearing aids into a container of uncooked rice or silica gel. Seal container and leave overnight. Both rice and silica gel can work as a dehumidifier and soak up water.</li> <li>Use a fan or hairdryer on the lowest setting. Only use hairdryer if it has a “cool” setting.</li> <li>Do not ever use high heat to dry the aids like an oven or microwave.</li> </ul> If the above suggestions do not work, contact your hearing aid provider. Your hearing aids aren’t necessarily damaged beyond repair and your hearing aid provider can talk to you about options. Image: Getty Images

Hearing

Say what? Here’s why you should check your hearing this September

With Women’s Health Week held every September, it offers us a chance to really focus on the different aspects of our health that we might not think about in our day-to-day lives. For Lauren McNee, a clinical trainer and audiologist at Audika, this week provides the opportunity to check in with something many of us ignore: hearing loss. “Overall, Australians are not taking action to look after their hearing, with only one in five planning a hearing test in the next 12 months - compared to 39 percent who intend to get an eye test in the same period,” she tells OverSixty. Over 1.5 billion people live with some form of hearing loss, ranging from mild to profound loss that can affect one or both of your ears. Though we might not think about it all that much, we rely on our ability to hear to interact with the world around us, with the <a href="https://www.who.int/health-topics/hearing-loss#tab=tab_1" target="_blank" rel="noopener">World Health Organisation</a> reporting that hearing loss can result in social isolation, loneliness and frustration, as well as $US 980 billion cost to the global economy each year. McNee says that taking the chance to check up on our ear health is particularly important as we age too, and should be among the various tests and check-ups we do to monitor our health. As we age, most of us will lose our hearing in some way, in a condition called presbycusis. According to the <a href="https://www.nidcd.nih.gov/health/age-related-hearing-loss" target="_blank" rel="noopener">National Institue on Deafness and Other Communication Disorders</a>, most of us will experience a combination of noise-induced hearing loss - from listening to sounds that are too loud or last too long - as well as age-related hearing loss which can occur because of changes to our inner ear. For women, McNee says that those with hearing loss are <a href="http://archotol.jamanetwork.com/article.aspx?articleid=1835392">more likely to suffer from depression</a> - but there are some key signs to look out for to catch hearing loss early. “Some key signs to look for include difficulty following conversations, phone conversations may be unclear, people seem to be mumbling, difficulty locating where sounds are coming from, ringing or buzzing in the ears, or even finding that you have to keep turning up the volume on the TV or radio,” she explains. “When a person’s communication becomes limited due to hearing loss, this can result in withdrawal from social activities and can lead to isolation – which we know can be a gateway to experiencing symptoms of depression.” Who’s at risk of hearing loss? Though McNee says hearing loss “doesn’t discriminate”, there are some factors that can increase your risk of losing your hearing. “It depends on a few factors, including your age and risk factors such as family history, occupation, and any pre-existing conditions like diabetes – which is known to be linked to hearing loss,” McNee explains. Whether our hearing loss is due to exposure or age, the damage and changes in our ears can’t be reversed. But, there are ways to protect your ears from other causes of hearing loss and reduce your risk of further loss. “If you are exposed to loud noises regularly, like renovations, loud music or engines, make sure you are taking steps to protect your ears at those times by wearing appropriate hearing protection,” McNee suggests. “If you like to listen to music, especially with ear bud headphones, make sure the volume is such that you can still hear others around you or keep listening time down.” McNee also suggests checking your hearing regularly, and that an annual check-up if you’re over the age 50 is best. “We usually recommend that people that aren’t exhibiting hearing loss, but are over the age of 50, get screened once a year just to be safe,” McNee says. “If you are at high-risk of hearing loss, or you are exhibiting symptoms, it’s important to get tested as soon as possible. Early detection can help reduce the risk of other related conditions such as depression.” Luckily, checking your hearing is a pretty quick and simple process, with tests offered in-person and online for free. Image: Getty Images

Hearing

"I had visual contact with Lyn Dawson" court hears

Chris Dawson’s judge-only murder trial has aired a recording of the accused's brother-in-law, who claimed that he spotted Lynette Dawson several months after she disappeared back in 1982. A police interview that was conducted between Dawson’s brother-in-law Ross Hutcheon back in 2019 was played in the Supreme Court on Tuesday. Mr Hutcheon claimed that he saw Lynette at a bus stop opposite Gladesville Hospital up to six months after she disappeared. "She looked just like the Lyn that I knew — same colour hair, same hairstyle, same glasses. No obvious attempt to disguise herself," he said in the recording. "The other thing that convinced me … was the fact that it was opposite the hospital and she was a nurse." Mr Hutcheon, who died six weeks ago and was married to Dawson’s sister also called Lynette, had claimed to have told her about seeing the missing mother that day. However, it was reported that Mr Hutcheon had instead reported the incident to police years later in 1999 stating he had "no contact with Lynette Dawson since her disappearance". "I had visual contact with Lyn Dawson, not verbal contact," Mr Hutcheon responded. Ms Hutcheon appeared in court on Tuesday and was questioned why she hadn’t discussed the possible sighting of her sister-in-law. She told the court that other people she knew had reported sightings of Lynette Dawson months after she disappeared and it didn’t cross her mind. "My husband had seen her and I had heard that other people had seen her. I thought she had been seen by people that knew her," she said. Chris Dawson has pleaded not guilty to murdering his wife Lynette, who went missing from the family home in Sydney's Northern Beaches in January 1982. The trial continues. Images: Nine News

Legal

Genetic discovery may help scientists reverse hearing loss

Neuroscience researchers have found a master gene that controls the development of special sensory cells in the ears – potentially opening the door to reversing hearing loss. A team led by Jaime García-Añoveros of Northwestern University, US, established that a gene called Tbx2 controls the development of ear hair cells in mice. The findings of their study are <a href="https://www.nature.com/articles/s41586-022-04668-3" target="_blank" rel="noreferrer noopener">published today in Nature</a>. What are hair cells? Hair cells are the sensory cells in our ears that detect sound and then transmit a message to our brains. They are so named because they have tiny hairlike structures called stereocilia. “The ear is a beautiful organ,” says García-Añoveros. “There is no other organ in a mammal where the cells are so precisely positioned.” Hair cells are found in a structure called the organ of Corti, in the cochlea in the inner ear. The organ of Corti sits on top of the basilar membrane. Sound waves are funnelled through our ear canal and cause the eardrum (also known as the tympanic membrane) and ossicles (tiny bones called the malleus, incus and stapes) to vibrate. The vibrations, or waves, are transmitted through fluid in the cochlea, causing the basilar membrane to move as well. When the basilar membrane moves, the stereocilia tilt, causing ion channels in the hair cell membrane to open. This stimulates the hair cell to release neurotransmitter chemicals, which will transmit the sound signal to the brain via the auditory nerve. <figure class="wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio"> <div class="wp-block-embed__wrapper"> <div class="entry-content-asset"> <div class="embed-wrapper"> <div class="inner"><iframe title="2-Minute Neuroscience: The Cochlea" src="https://www.youtube.com/embed/WeQluId1hnQ?feature=oembed" width="500" height="281" frameborder="0" allowfullscreen="allowfullscreen"></iframe></div> </div> </div> </div> </figure> <h2> </h2> Hair cells and hearing loss There are actually two types of hair cells: inner and outer. We need both types to hear effectively. The outer hair cells change their shape and amplify sound for the inner hair cells, which transmit the vibrations to the brain. <div class="newsletter-box"> <div id="wpcf7-f6-p190195-o1" class="wpcf7" dir="ltr" lang="en-US" role="form"> <form class="wpcf7-form mailchimp-ext-0.5.61 init" action="/science/genetic-discovery-reverse-hearing-loss/#wpcf7-f6-p190195-o1" method="post" novalidate="novalidate" data-status="init"> <input class="wpcf7-form-control wpcf7-text referer-page" name="referer-page" type="hidden" value="https://cosmosmagazine.com/health/" data-value="https://cosmosmagazine.com/health/" aria-invalid="false" /> </form> </div> </div> “It’s like a ballet,” says García-Añoveros. “The outers crouch and jump and lift the inners further into the ear.” Hair cells develop before we are born and do not typically divide to create new versions of themselves. As we age, our hair cells die, <a href="https://cosmosmagazine.com/health/hair-cell-loss-may-explain-hearing-loss/">leading to hearing loss</a>. Loss of outer hair cells is particularly common. According to the US Centers for Disease Control, about 8.5% of adults aged 55-64 in the US experience “disabling” hearing loss, with that number increasing to nearly 25% in people aged 65-74, and 50% in those 75 and older. Could we one day reverse hearing loss? Since hair cells don’t usually divide, we may be able to reverse hearing loss if we can reprogram stem cells or other cells in the ear to become hair cells to replace those that die. Scientists have already produced artificial hair cells, but until now didn’t know how to direct the cell to become an inner or an outer hair cell. The team at Northwestern discovered that a gene called Tbx2 controls the development of both inner and outer hair cells. If Tbx2 is “switched on” to produce the protein TBX2, the cell develops into an inner hair cell. If Tbx2 is “off”, it becomes an outer hair cell. “Our finding gives us the first clear cell switch to make one type versus the other,” García-Añoveros explains. The finding is a step towards learning how we can reprogram the cells that usually provide structural support for the hair cells to become inner or outer hair cells themselves – replacing dead hair cells and preventing or reversing hearing loss. “We can now figure out how to make specifically inner or outer hair cells and identify why the latter are more prone to dying,” García-Añoveros says. “We have overcome a major hurdle.”  <img id="cosmos-post-tracker" style="opacity: 0; height: 1px!important; width: 1px!important; border: 0!important; position: absolute!important; z-index: -1!important;" src="https://syndication.cosmosmagazine.com/?id=190195&title=Genetic+discovery+may+help+scientists+reverse+hearing+loss" width="1" height="1" data-spai-target="src" data-spai-orig="" data-spai-exclude="nocdn" />  <div id="contributors"> <a href="https://cosmosmagazine.com/science/genetic-discovery-reverse-hearing-loss/" target="_blank" rel="noopener">This article</a> was originally published on <a href="https://cosmosmagazine.com" target="_blank" rel="noopener">Cosmos Magazine</a> and was written by <a href="https://cosmosmagazine.com/contributor/matilda-handlsey-davis" target="_blank" rel="noopener">Matilda Handsley-Davis</a>. Matilda is a science writer at Cosmos. She holds a Bachelor of Arts and a Bachelor of Science (Honours) from the University of Adelaide. Image: Getty Images </div>

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Hear recordings of space from NASA’s spacecraft

When we look at the stars and sun in the sky, it’s easy to think of them existing in silent and mostly empty space - but that couldn’t be further from the truth. Over the years, NASA’s spacecraft have explored various corners of space collecting photos, videos, data, and radio emissions. It’s these emissions that the scientists at the top space agency have converted into sound waves that are freely available to hear for yourself. Some, like the whistling sounds captured in Saturn’s radio emissions by the Cassini spacecraft, are eerie to say the least, and so are droning tones resulting from the sonification of the Sun’s radio waves. <iframe style="border: none; overflow: hidden;" src="https://www.facebook.com/plugins/video.php?height=314&href=https%3A%2F%2Fwww.facebook.com%2FNASA%2Fvideos%2F259558922952746%2F&show_text=true&width=560&t=0" width="560" height="429" frameborder="0" scrolling="no" allowfullscreen="allowfullscreen"></iframe> Other interesting sounds have come from the encounter between NASA’s Stardust spacecraft and a comet called Temple 1 in 2011, as the craft’s protective shield was pelted by icy dust particles and rocks. And then there’s the sounds from plasma waves - movements of electrons in the magnetic fields surrounding Earth - with some, called ‘whistler waves’, <a href="https://www.nasa.gov/feature/goddard/2017/nasa-listens-in-as-electrons-whistle-while-they-work" target="_blank" rel="noopener">sounding</a> like a flock of noisy birds in parts of space that are warmer, or like the sound effects of a Space Invaders game after lightning strikes. In 2018, the first “sounds” of winds on Mars were recorded by NASA’s InSight lander, which later went on to record ‘Marsquakes’ using a seismometer. The vibrations it recorded were then also turned into <a href="https://soundcloud.com/nasa/dinks-and-donks-sample" target="_blank" rel="noopener">audio</a> (it’s recommended to listen with headphones for the best experience). <iframe title="YouTube video player" src="https://www.youtube.com/embed/m9cCuW9nIQg" width="560" height="315" frameborder="0" allowfullscreen="allowfullscreen"></iframe> To hear more sounds of space, click <a href="https://soundcloud.com/nasa/sets/spookyspacesounds" target="_blank" rel="noopener">here</a> and <a href="https://www.nasa.gov/connect/sounds/index.html#Apollo" target="_blank" rel="noopener">here</a>. Image: NASA

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