My GP tells me EVERYTHING I complain about is an overuse issue and I should take it easy because I'm getting older. Phooey on that. This is why I never go to the doctor. They don't know what to do with active people and they have no ability to diagnose sub-clinical problems. My doctor would have waited until I had a heart attack or full-on diabetes before he would ever have suggested maybe I have a problem with carbohydrates, and even then he'd never suggest I had a problem with carbs, he'd just throw some pills at me.
One time I went in there because after a backpack trip my ankle hurt a lot. He diagnosed me with bursitis and said I should not get any exercise for 6 weeks and ice it. I iced it and sat around for 2 days. It just got stiffer and worse. I knew intuitively I should at least walk around gently, not just sit there doing nothing. It went away very quickly then and I've never had the problem again.
Female, 5'3", 49, Starting weight: 163lbs. Current weight: 135 (more or less).
Starting squat: 45lbs. Current squat: 157.5 x 2