I recommend regular checkups with an audiologist, especially as you get up in years. Here's one unexpected benefit:

I was having increasing difficulty hearing my wife, found myself saying "huh? what?" a lot. I accused her of mumbling. She said I was going deaf. So I went to an audiologist for a checkup. Test results: even after a lifetime of shooting, my hearing is quite good for a 70 year old! So now I can tell my wife to quit mumbling...

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