She will be required to medicate to suppress her testosterone levels if she wants to defend her world title. “I know that the IAAF’s regulations have always targeted me specifically. For a decade the IAAF has tried to slow me down, but this has actually made me stronger. The decision of the CAS will not hold me back,” Semenya said. In a landmark judgment, the court said the IAAF’s proposed rules on athletes with “differences of sex development (DSD)” are discriminatory.
Olympic champion Caster Semenya
The ruling means that Semenya and other affected athletes hoping to compete at the World Championships in Doha in September would have to start taking medication to lower their testosterone level to below the required five (5) nmol/L within one week. In the future, athletes will be required to have reduced their blood testosterone level to below the stipulated concentration for a period of six months before they can compete. Semenya took out the gold in the 800-metre event in both 2012 and 2016, but was subjected to gender testing following her victory at the 2009 World Championships.