Your last sentance is absurdly dense.
Why do you think so many MMA fighters, in the prime of their lives and in fantastic physical condition, have low testosterone levels?
That's rhetorical, btw.
These guys dope for years, to the point their bodies are so confused that they wont produce their own testosterone.
Its mind blowing you would defend him. Even if he didn't intend to cheat this time, the reason he lacks testosterone to begin with is due to his past cheating.