Learn about hearing loss that goes untreated; hearing aids and PSAPs (Personal Sound Amplification Products). Untreated hearing loss is statistically associated with higher risks of social isolation; depression; dementia; falls with injury; and inability to work, travel, or be physically active, according to this 2015 letter from the President’s Council of Advisors on Science and Technology (PCAST). Letter defines differences between hearing aids and PSAPs. It cites a 2014 survey that found the average cost of one hearing aid was $2,363 (approximately $2,911 in 2022 dollars with medical inflation). Fifteen page report addresses high cost of hearing aids.