Headphone users watch out! Don't play too loud or for too long
The study involved 8,710 girls of lower socioeconomic status, whose average age was about 16. Their hearing was tested when they entered a residential facility in the U.S Northeast.
"I had the rare opportunity, as an audiologist, to see how this population changed over the years," said Abbey Berg, lead study author and a professor in the Department of Biology & Health Sciences at Pace University in New York.
In this period, high-frequency hearing loss -- a common casualty of excessive noise exposure -- nearly doubled, from 10.1 percent in 1985 to 19.2 percent, she found.
Between 2001, when testers first asked about it, and 2008, personal music player use rose fourfold, from 18.3 per cent to 76.4 per cent.
For full news follow the link below---------------
http://lifestyle.in.msn.com/health/article.aspx?cp-documentid=4330699 
