Tag Archive: Jan L. Mayes

A noise control cure for noise-induced tinnitus and hyperacusis

Photo credit: Owen Barker from Pexels

by Jan L. Mayes, MSc, Audiologist

In a 2019 article titled “Why is there no cure for tinnitus?” the authors looked at whether studies had dentified if participants have a history of significant noise exposure that could cause decreased sound tolerance, like hyperacusis or tinnitus. A cure for noise-induced tinnitus and hyperacusis, the authors noted, could be very different from a cure for tinnitus or hyperacusis from other causes, like aging or head injury.

The article shows that it’s important for research to identify noise sub-types when evaluating potential cures. The underlying hearing health damage for sudden high level noise like acoustic trauma is different than damage from chronic moderate level noise over time. That is, the cure for noise-induced tinnitus and hyperacusis from bomb blasts or firearms is likely different than the cure for noise-induced tinnitus and hyperacusis from being exposed to unhealthy noise at school, on public transit systems, or at noisy workplaces.

High level public noise pollution in daily life can impact hearing health of all ages from babies to elders. Fortunately, the solution for tinnitus and hyperacusis caused by public noise pollution is not a cure–it’s better than a cure, as the solution is preventing the noise from happening in the first place.

How? There must be noise control for human manufactured unhealthy noise sources like personal listening devices, aircraft, road vehicles, railways, consumer products, and even MRI machines. There is no need for a cure if the source noise is never manufactured to be loud enough to cause decreased sound tolerance in the first place.

Controlling the source of noise would have other positive effects. Moderate levels of public noise pollution can significantly affect the quality of life for people with tinnitus and hyperacusis by causing poor sleep and making it significantly harder to understand speech in the presence of background noise. This, in turn, can increase stress levels, making it harder to cope and potentially interferring with available treatment.

Noise control is not impossible. Protecting the general public from unhealthy noise must cost less than the combined healthcare costs of diagnosing and treating tinnitus, hyperacusis, and other hearing health damage. And new noise prevention materials are constantly being invented. Examples include an acoustic material invented by Boston University that silences or cancels out 94% of sound waves without blocking light or airflow. A Canadian company is making noise barriers that absorb noise and air pollution. Quiet electric passenger planes could be in regional operation by 2021.

But nothing will change about public noise pollution until authorities and decision makers make health and hearing health a priority. This includes real time city and transportation noise mapping and reporting to identify locations with unhealthy noise. Noise prevention and control is necessary to protect public health and it should be mandatory.

Dr. Daniel Fink describes implications for acoustic engineering and design considerations for structures and enforced noise emission regulations and restrictions. Examples could include muffling school and public hand dryers, hour restrictions or night curfews at airports, quieter leaf blowers, quiet defaults on consumer products like microwaves with an option to turn on audible alerts, quiet solutions to replace vehicle back-up beeps, or preventing new imposed noise from delivery drones or noisy audible vehicle alert systems on electric cars. New technology needs to be quietly accessible for everyone.

Preventing public noise pollution won’t stop all cases of tinnitus and hyperacusis, but it could stop millions of cases around the world. Safe soundscapes without unhealthy noise are best for everyone from newborns to elders. And prevention is always better than trying to treat the problem or find a cure for noise-induced hearing damage after it occurs.

Jan L. Mayes is an international Eric Hoffer Award winning author in Non-Fiction Health. She is also a blogger and newly retired audiologist still specializing in noise, tinnitus-hyperacusis, and hearing health education. You can read more of Jan’s work at her site, www.janlmayes.com.

 

 

The health impact of environmental noise

by Jan L. Mayes, MSc, Aud(C), RAud, Audiologist

Environmental noise is damaging and inflicts unwanted sounds into everyday life. In 1984, Gordon Hempton, The Sound Tracker, found 20 natural locations in Washington State with noise-free intervals lasting over 15 minutes. No manmade noise at all. No planes, trains, or traffic. By 1995, only three locations were noise-free. When I employed current sound tracking in my suburban neighbourhood in the Pacific Northwest, I never had noise-free intervals last more than 4 minutes.  And I tried tracking at different times of the day, every day of the week for months.

Sociocusis is high distortion hearing loss caused by loud personal environmental noise (i.e., 75 dB average or higher). The louder the noise, the faster the damage. Noise-induced hidden hearing loss starts first. It begins with permanent rips in hearing nerves for which there are no symptoms, but damage is progressive for months after noise ends. More unprotected noise exposures causes yet more nerve damage leading to temporary or permanent inner ear hearing loss and what I call “hyper ears” (tinnitus and hyperacusis). Presbycusis, or age-related hearing loss, comes from gradual inner ear changes over time. Sociocusis, wrongly called early presbycusis, has a much greater impact on communication and music enjoyment than presbycusis alone.

There are also physical and mental health hazards from chronic environmental noise (i.e., 55 dB – 75 dB average). Health effects include stress, insomnia, learning problems in children, obesity, diabetes, high blood pressure, heart attacks, strokes, dementia, and shorter life. Blood pressure goes up with every 10 dB increase in environmental noise.

Ear protection prevents sociocusis from loud activities like nightclubs, concerts, and stadium events. Imagine if these venues were designated “Noise Hazard Zones”: no ear protection, no entry. Imagine Noise Free Zones like at Comic-Con 2017 in New York City. Imagine architects designing public spaces with quiet acoustics in the first place. Imagine if it was standard for manufacturers to make quiet products, dropping the noise hazard of everything from blenders, lawnmowers, planes, trains, and traffic.

The UK estimates noise pollution related healthcare costs at £1.09 billion annually. The EU is using urban planning and government polices to prevent environmental noise. Noise mitigation strategies include quiet asphalt, low-noise tires, traffic curfews, quieter airplanes, noise-optimized airport take-off and approach procedures, and better infrastructure planning.

But in the U.S., the FAA denies the crippling public health burden of noise pollution, and Congress hasn’t passed the Quiet Communities Act of 2016 or 2017.

Nobel Prize Winner Robert Koch predicted in 1910 that “[o]ne day man will have to fight noise as fiercely as cholera and pest.” I think the day is here.

Jan L. Mayes is an international Eric Hoffer Award winning author in Non-Fiction Health. She is also a blogger and audiologist specializing in noise, tinnitus-hyperacusis, and hearing health education. You can read more of Jan’s work at her site, www.janlmayes.com.