Turning the volume up too high on your headphones can damage the coating
of nerve cells, leading to temporary deafness, scientists from the
University of Leicester have shown for the first time.

Link: http://www.sciencedaily.com/releases/2012/08/120829064707.htm?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+sciencedaily%2Fhealth_medicine%2Fhearing_loss+%28ScienceDaily%3A+Health+%26+Medicine+News+--+Hearing+Loss%29