(June 21, 2010 - Insidermedicine)

Listening to pop music on an MP3 player temporarily reduces hearing sensitivity, according to research published in the Archives of Otolaryngology-Head & Neck Surgery.

Here are some ways to protect your hearing:

•    Wear ear plugs when going to noisy places, including concerts and discos

•    Consult an occupational safety expert if you are concerned about the level of noise you are exposed to at work

•    Be aware that everyday tools, including lawnmowers and stereos, can be loud enough to damage hearing

Researchers from Ghent University measured the sound level of music when played on an MP3 player using both stock headphones and supra-aural headphones. Next, 21 participants listened to pop music for six one hour sessions using each type of headphones as well as multiple preset gain settings. Before and after these listening sessions, the participants underwent several tests of their hearing.

At full volume, the sound level of the MP3 player was just under 100 dBA using the supra-aural headphones and just over using stock headphones. Sounds over 90 to 05 dBA are considered loud enough to damage hearing. Following each one-hour listening sessions, participants’ hearing sensitivity was temporarily but significantly diminished.

Today’s research highlights the temporary effects that listening to an MP3 player can have on hearing, suggesting that permanent effects may also be possible, especially with regular use.