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Being born with high T levels is clearly different to having a sex change and altering your body chemicals though. I'm not sure how I'd feel if I was a woman beaten by someone born as a man but if Semanya has never taken anything and is a woman then why on earth can't she compete as she is?
No one bats an eyelid at 7ft tall basketballers or swimmers that wear size 20 shoes, why should a different type of genetic outlier be penalised?
"In April 2018, the IAAF announced new rules that required hyperandrogenous athletes to take medication to lower their testosterone levels, effective beginning in November 2018.[81][82][83] Due to the narrow scope of the changes, which only apply to athletes competing in the 400m, 800m, and 1500m, many people thought the rule change was designed specifically to target Semenya.[84][85][86][87]"
https://en.wikipedia.org/wiki/Caster_Semenya#2018_testosterone_rule_change