I was having shoulder issues... pain, clicking, clunking, etc. as well as wrist, elbow, and knee issues, and didn't shoot more than a handful of arrows over the course of a year or so. I was blaming the shoulder thing on the heavy bows I was shooting... that wasn't it. I changed my diet, big time, initially to lose weight, and no longer eat anything with artificial sweeteners(aspartame is NASTY stuff and should be illegal), sugar, grains, and very little dairy. I also completely avoid any processed foods and pay attention to the kinds of fats I eat, trying now to keep trans and saturated fats low and the omega 6 to omega 3 ratio as even as possible.
I also started working out and I think that's helping my shoulder too... lotta pushups, pullups, etc.
My shoulder issues, in fact, ALL my joint issues, have vanished. I'm SO glad I didn't go to a doctor.
Do a search on diet, nutrition, inflammation, autoimmunity, etc.