There are more than 10 million people in the UK with some form of hearing loss, according to Action on Hearing Loss - that's one sixth of the population.
Just over one third (3.7 million) are of aged between 16 and 64, while two thirds (6.3 million) are of retirement age.
Hearing damage can be caused by loud music at concerts or, sadly, is just symptomatic of growing old. But according to new research, it might be possible to reverse hearing damage.
Julian Huguet, from DNews, explains how in the video above.