Causes of Hearing Loss in Adults.
Hearing loss in adults can either be inherited from your parents or acquired from illness, ototoxic (ear-damaging) drugs, exposure to loud noise, tumors, head injury, or the aging process. This loss may occur by itself or with tinnitus (ringing in the ears).
The most common types are noise-induced hearing loss and age-related hearing loss, which often go hand in hand. Source: https://www.asha.org/public/hearing/Causes-of-Hearing-Loss-in-Adults/