I went in to get my hearing checked a few years ago when I was 29 and the doc said I was right on the verge of needing hearing aids then. I have shot A LOT starting as a child, but almost alway wore hearing protection, so not sure if that is the cause. Haven't been back to have it checked since, but would be tough to do my job without being able to hear, which is the reason I refuse to use or shoot around anybody using a muzzle break.