A compelling argument I’ve heard is that the greatest performance enhancing drug is being exposed to testosterone during puberty and that seems to be the base line a lot of the sporting organisations use
It might be compelling, but that doesn’t make it true (the testosterone in puberty part, not the sports organisations using transphobic rhetoric part, though as you can see bellow, even the International Olympic Committee, arguably the biggest global sports organisation, doesn’t advocate this thinking)
several key conclusions coincide with findings from the IOC funded study, including…Testosterone levels do not predict athletic performance or overall athleticism.