The additional nuances here though is that it's her genes that result in higher testosterone levels (entirely natural for her) -- higher than other women (which she is) -- but, not higher than any male... that and, the possible fixes fix which for her are to take drugs that arguably take-away her advantage relative to other females (which she is) or surgery to remove something she was born with. Or, of course, race against men (but, she's a woman). And then, if it's okay to just let it slide, should her competitors then be allowd to artificially supplement testosterone levels. And, that's interesting to think about when applied to cycling--e.g., similarly, what was LA to do if he wanted to win if 40-60% of his adversaries where doping...