I work in an audiology research lab. It is true that hearing aids can degrade your hearing. But if it is tuned by an audiologist it can do significantly more da

I work in an audiology research lab. It is true that hearing aids can degrade your hearing. But if it is tuned by an audiologist it can do significantly more damage. Of course that does little good for people without health insurance - hearing aids are so expensive. But if you can possibly afford to see an audiologist and care about maintaining your hearing (which not everyone does) you should absolutely not use untuned audio amplifiers.