A survey by the Royal National Institute for Deaf People (RNID) has found that more than half of 16 to 30 year-olds use MP3 players for more than an hour a day, which results in an increased risk of permanent hearing damage.

Dr John Low, Chief Executive, RNID said: "New technology and ever-increasing storage capacity enables people to listen to their MP3 players for hours – and at louder volumes than ever before. If you are regularly plugged in, it is only too easy to clock up noise doses that could damage your hearing forever.

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