Two-time Olympic champion in the run for 800 meters South African Custer Semenya may not be allowed to participate in the next Olympics, unless she undergoes a course of hormone therapy.
The peculiarity of her body lies in the naturally high level of male hormones.
The International Association of Athletics Federations (IAAF) initiated a study that proved that an increased level of testosterone in the body of a female athlete gives it an advantage over competitors, like doping.
We note that doubts about the sex of the runner arose after her victory at the 2009 World Championships in Berlin. Then the athlete was forbidden to participate in athletics competitions during the year and had to pass gender tests.
Note that the Sports Arbitration Court has blocked IAAF rules for athletes with high testosterone levels in July 2015. However, after receiving new research data, the IAAF is going to file a protest against this decision.