Tendonitis in Bodybuilding/Strength Training Posted July 9, 2008 You said that Tendonitis is not caused by overtraining - I typed tendonitis into google & the first link on the page said that Tendonitis was most commonly found in adults who do alot of sporting activites so im not sure where you think Tendonitis comes from? Do you have diabetes or gout? and I avoid soy due to thyroid disease Has Soya been linked to thyroid disease? I ask because I eat more Soya than a large Chinese village. I said MY tendonitis must not be due from overtraining. I know tendonitis is from overtraining, therefore what I have MAY NOT be tendonitis, but I don't know what else to call it. No I dont have diabetes or gout. Yes, soy is a goitergenic food and should be avoided by people with thyroid disease, specifically hypo and hashimoto's. Soy by itself does not cause thyroid disease, but it does worsen the symptoms if the disease is present. My goals are to gain more muscle mass, and I have a very thin body type which makes it hard for me to gain muscle. I just can't do it with once a week workouts, I need to lift heavy consistently to grow and keep my gains, or else my high metabolism just eats it up.