Inflammation/muscular aches can also be diet related. About 10 years ago, I started the crossfit thing. About 6 months in, I tried the "paleo" diet and noticed a marked decrease in joint pain in general and improved exercise performance. I attribute this to reduced consumption of refined sugar, carbs, and most junk foods. Cutting those things out reduced joint pain and inflammation.
I'm not super strict about the diet anymore , but I do notice generally feeling better the better I eat. I also am not exercising like a total idiot in crossfit anymore - I am mindful about not overdoing things even though "I used to be able to lift that." So my suggestion would be to dial things back on the mountain and think about changing what you are eating. This will probably give you back some years, but not really hault the aging process