Can hearing aids be used to help people who suffer from tinnitus?
This article from the American Academy of Audiology discusses just that. At first I was surprised, but it does make sense. I tend to have tinnitus when I don't have my aids in, but when I am wearing them the amplified sound muffles the tinnitus. According to the article, "Sound therapy via hearing aid amplification may be beneficial as amplified sounds may increase neuronal activity, amplified sounds may reduce tinnitus audibility and awareness."
A study was done on 29 people with sensorineural hearing loss and tinnitus. They were given hearing aids and counseling (including relaxation techniques and ways to reduce stress). According to the article, "The authors concluded that counseling combined with hearing aids results in twice the reduction in tinnitus handicap as would be expected using counseling alone."