More than half of all MP3 users in this country are damaging their hearing.

Research carried out has found that 51% of people listen to their MP3 players for more than two hours a day, at dangerously high levels, or levels over 89 decibels.

One in five people listen to music at levels of 100 decibels or more, the equivalent of hearing a pneumatic drill ten feet away.

Listening to music at this level can cause hearing damage after just half an hour.

This latest survey, conducted by RED C on behalf of Hidden Hearing, supports findings in a recent European Commission study that found that one in ten 30-year-olds will be wearing a hearing device by 2020 as a result of listening to music too loudly.