Age
This is the most common cause of hearing impairment. Most people start to lose of their hearing when they are between 30 and 40 years old. This gets worse as you grow older, and by 80 years old you would have significant hearing problems.
Acoustic trauma
This means your ears are damaged from hearing loud noises for a long time.
Conductive hearing loss
This means sound cannot enter the inner part of your ears. It can be caused by something blocking your ears, such as earwax, or a build-up of fluid that could be caused by infection.
Sensorineural hearing loss
This happens after the sensitive hair cells in your ear are damaged.