[AlternativeAnswers] Protect Yourself Against Hearing Loss
http://drbenkim.
Protect Yourself Against Hearing Loss
By Dr. Ben Kim on March 26, 2009 Health Warnings
Updated on March 26, 2009
It's estimated that 10 million Americans suffer with noise-induced hearing loss. In fact, noise is one of the most common occupational hazards today, with as many as 30 million Americans being exposed to harmful noise levels at work.
We register sound through little hairs that vibrate in our inner ears in response to different noises. When these hairs are exposed to a sudden burst of very loud noise or to a steady stream of fairly loud noise, they can get damaged, resulting in hearing loss.
Sound pressure is measured in decibels (dB). Here are some everyday sounds and their average decibel rankings:
Sound
Decibels (db)
Very faint, rustling leaves
5
Whisper
20
Rainfall
50
Typical speech
60
Washing machine
75
Busy city traffic
85
Hair dryer
90
Leaf blower, rock concert, chainsaw
110
Ambulance, jack hammer
120
Jet plane from 100 feet
130
Fireworks, gunshot
140
12-gauge shotgun
165
How loud is too loud?
Steady exposure to noise that reaches 85 dB can produce hearing loss. A one-time exposure to very loud noises like a gunshot at 140 dB can also cause hearing loss. Listening to a discman or mp3 player at a standard volume level of 5 for 15 minutes a day is enough to cause permanent damage.
Since it's not practical to walk around with a meter that allows you to measure dB, a good rule of thumb is that if you have to raise your voice in order to be heard by a person who is a couple of feet away, the noise level is considered hazardous.
Another practical measure is to carefully observe for ringing in your ears or if sounds feel flat or dull after leaving a noisy environment. If either of these conditions are present, you were probably exposed to a hazardous level of noise.
If you are exposed to potentially harmful noises at work or home, I recommend that you strongly consider using expandable or pre-molded earplugs. You can find them at almost any pharmacy.
An alternative is to use earmuffs, although they might not provide the same level of protection as earplugs that sit snug in your external ear canal.
If you have children who like to listen to music on their mp3 players or in their cars, please share this article with them so that they're aware of how their choices today may affect them in the future.
For more information about noise-induced hearing loss and what you can do to prevent it, please visit the website for the National Institute for Occupational Safety and Health.
Muhammad Ahmad Al-Masry
64, Muhammad Korayem Street,
Gomrok, Alexandria, Egypt
Tel: 0020-03-4800555
Fax: 0020-03-3082667
Web: massrii@yahoo.
massrii@hotmail.
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