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30. Do you often listen to music at loud volumes? You should know that this habit is bad for your hearing, according to the World Health Organization （WHO） .
Over 1billion young people are at risk of hearing loss due to listening to loud noises for long periods of time, WHO said. 1
The United Nations has standards for safe listening. It is not safe to listen to sounds that are louder than85 decibels （dB,分贝） for eight hours or 100 dB for 15minutes. The sound of a busy road is about 85 dB and the sound of a rock concert can be about 100 dB.
2 Most of us are born with about 16,000hair cells （听毛细胞） in our inner ears. These cells detect sounds. However, listening to loud noises for along time can make these cells work too hard and cause some of them to die. 3
Some people might think that their music isn’t all that loud. 4 For example, if you are in a noisy place like the subway, you might turn up your music too loud without realizing it. Later, when you listen to it at the same volume in a quiet place, it may feel uncomfortable.
WHO said the “safe level” for most sound below80 decibels for up to40 hours a week. 5 A.This is what causes hearing loss.
B. But this can depend on where you are.
C.Loud noises are harmful to the inner ear.
D.There are different ways to protect your hearing.
E.A level of80 decibels is roughly equal to the noise of a subway.
F. Young people are more sensitive to different sounds than elder people.
G.Listening to music or watching a TV show at loud volumes can harm your hearing.
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