Results: International Association of Athletics Federations bans "intersex athlete"

Intersex are athletes who identify as having "differences of sex development." Intersex is an umbrella term for people who are born with sex characteristics “that do not fit typical binary notions of male or female bodies,” according to a definition by the human rights arm of the United Nations. Caster Semenya is hyperandrogenous, meaning her body naturally produces high amounts of testosterone, the hormone that helps build muscle, endurance and speed. Experts believe Semenya and other intersex athletes, although born female, develop internal testes around the time they hit puberty — keeping their gender the same but creating an unfair advantage. The Court of Arbitration for Sport's panel of three judges denied Semenya's appeal against IAAF rules that will force female runners like " Caster Semenya" to decrease naturally high testosterone levels in select track and field events as intersex athletes. They do not allow her to compete as a "female" athlete because she has a natural advantage (more testosterone) over other athletes competing in the event.