I was reading by a msm Newspaper that he may actually not be a cheat in the classic sense. He has some kind of Adhd and he was using ritalin, ritalin is a amphetamine and that is why it would be banned but he would have needes it because of his Adhd. And I think the other thing was testosterone which he claimed his coach told him to take, ofcourse it enhances a man's performance. Maybe a honest mistake?