Allot of people are predisposed to certain conditions and their lifestyle can hasten the problem. Aside from the crazy amount of steroids, think of all the pharmaceuticals some of the top level BB's must take to battle the side effects. Throw in some painkillers due to a constant injury somewhere. The smallest dose to get results is a good guideline to follow. However....if those guys would have been ten years older or NOT bodybuilders we of course would think natural cause due to predisposition.
