"Himelstein writes that these NIHL cases are likely a consequence of the growing use of iPods and MP3 players, which has increased from 18% to 76% between the years 2005 and 2007. She further says that an MP3 player produces sound with the same loudness as a chainsaw, with both registering 100 decibels (dB). Concerts of any genre, which many teens also like attending, produce sounds with 110dB. NIHL can start developing from constant exposure to noises over 85 dB, making someone who frequently listens to their MP3 player at maximum volume highly vulnerable. Himelstein suggests parents should make their children turn down the volume of the players to no more than 60% of the maximum, and limit their listening time to 60 minutes a day. When attending concerts, hearing experts advise that wearing hearing protection devices, such as ear plugs, can protect your ears from damage."
http://www.earpeace.com/blogs/info-article/9713682-encourage-your-teens-to-utilize-the-right-hearing-protection-devices
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