Athletics: Semenya loses appeal against CAS ruling over testosterone regulations

FILE PHOTO: South African athlete Caster Semenya, who is fighting an IAAF regulation that would require her to take testosterone-lowering medication to defend her 800-metre title at the World Championships in September, speaks at a women's conference in Johannesburg, South Africa August 14 2019. REUTERS/Siphiwe Sibeko

LAUSANNE, Switzerland (Reuters) - Double Olympic 800 metres champion Caster Semenya has lost her appeal to the Swiss Federal Tribunal (SFT) to set aside a 2019 Court of Arbitration (CAS) ruling that female athletes with high natural testosterone levels must take medication to reduce it.

But the South African has indicated that she may continue her battle in the European and domestic courts ahead of the Olympics in Tokyo next year, vowing to "fight for human rights".