As you get older, your hearing can start to decline. This is called age-related hearing loss or presbycusis. It usually occurs gradually over time, beginning after the age of 65.Presbycusis can be caused by a number of factors such as exposure to noise or certain medications, but it is typically just a part of the aging process. It can affect one or both ears and may cause difficulty hearing higher-pitched sounds, such as children's voices. What...