Please note: This information was as current as we could make it on the date given above. But medical information is always changing, and some information given here may be out of date. For regularly updated information on a variety of health topics, please visit familydoctor.org, the AAFP patient education Web site.

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An article on this topic is available in this issue of AFP.

How to Prevent Noise-Induced Hearing Loss

What is noise-induced hearing loss?

Noise-induced hearing loss is the slow loss of hearing caused by too much noise. Hearing loss happens when too much noise hurts the hair cells in the inner ear.

Noise-induced hearing loss is one of the most common causes of nerve deafness. As many as 10 million Americans have this kind of hearing problem.

Noise-induced hearing loss lasts forever. Hearing aids can help, but they can't fully correct it.

This kind of hearing loss can be prevented by staying away from loud and long noises.

How do I know if noise could be hurting my ears?

You may be exposed, at work or through hobbies, to noise that hurts your hearing. If you have to shout when you talk to a coworker who is standing next to you, the noise level at your workplace may be hurting your ears.

Common Noises That Might Hurt Your Ears Include: Firearms 140 to 170 decibels Chain saw, rock concert 110 to 120 decibels Personal stereo players/disc player 100 decibels Farm machinery 90 to 110 decibels Certain children's toys 110 decibels Snowmobile 100 decibels Motorcycle, lawnmower 90 decibels

Both the loudness of sound (called the intensity) and the amount of time you hear the noise are important. Sound is measured in decibels. Eight hours of hearing noise at 85 decibels could hurt your hearing. At higher sound levels, you could lose hearing in even less time.

Workplaces where sound levels are an average of 85 decibels or higher average for more than eight hours must have programs to save the hearing of workers. These workplaces must give free hearing protection devices to workers.

How do I know if I'm getting noise-induced hearing loss?

Noise-induced hearing loss usually happens slowly. There is no pain. Right after hearing noise, you may notice a "ringing" sound in your ears. You might have trouble hearing people talk. After several hours or even a few days, these symptoms usually go away. However, when you are exposed to this kind of noise again, you could get a hearing loss that lasts forever.

Early signs of noise-induced hearing loss include the following:

• Having trouble understanding what people say, especially in crowded rooms
• Needing to turn the TV sound higher
• Having to ask people to repeat what they just said to you
• Not being able to hear high-pitched sounds, like a baby crying or a telephone ringing in another room

Along with the hearing loss, you may also have ringing in the ears. (This is called "tinnitus.")

The only way to find out if you have a hearing loss is to have your hearing tested by a trained professional.

What can I do to prevent noise-induced hearing loss?

• You can make "hearing health" a part of your lifestyle. Stay away from loud or prolonged noises when you can. Turn down the music volume. Buy power tools that have sound controls.
• When you must be around noise, either at work or at play, use something to protect your hearing.
• Hearing protection devices, like earplugs, earmuffs and canal caps, are sold in drugstores and hardware stores. Different brands offer different amounts of protection. If you are not sure which kind is best for you, or how to use it correctly, ask your doctor. Often the best kind is the one that you feel comfortable in so you can wear it when you need it.
• Keep your hearing protectors handy and in good condition.
• Teach your family how important it is to stay away from too much noise and to use hearing protection.
• If you think you have a hearing loss (or if someone in your family thinks so), it is important to have your hearing tested.

To get more information about noise-induced hearing loss In addition to your doctor, here are four good sources of information about noise-induced hearing loss: League for the Hard of Hearing 71 W. 23rd St. New York, NY 10010-4162 Telephone: 1-917-305-7700 Web site: http://www.lhh.org/noise National Hearing Conservation Association 9101 E. Kenyon Ave. Ste. 3000 Denver, CO 80237 Telephone: 1-303-224-9022 Web site: http://www.hearingconservation.org National Institute for Occupational Safety and Health 200 Independence Ave., S.W. Washington, D.C. 20201 Telephone: 1-800-35-NIOSH Web site: http://www.cdc.gov/niosh Sight and Hearing Association 674 Transfer Rd. St. Paul, MN 55114-1402 Telephone: 1-800-992-0424 Web site: http://www.sightandhearing.org

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This handout provides a general overview on this topic and may not apply to everyone. To find out if this handout applies to you and to get more information on this subject, talk to your family doctor.

Visit familydoctor.org for information on this and many other health-related topics.

Copyright © 2000 by the American Academy of Family Physicians.
Permission is granted to print and photocopy this material for nonprofit educational uses. Written permission is required for all other uses, including electronic uses.

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