From - BBC Sport News, Edited by - Amal Udawatta, Caster Semenya won Olympic 800m gold at London 2012 and Rio 2016 The European Court of Human Rights has ruled in favour of double 800m Olympic champion Caster Semenya in a case related to testosterone levels in female athletes. The 32-year-old South African was born with differences of sexual development (DSD) and is not allowed to compete in any track events without taking testosterone-reducing drugs. A three-time 800m world champion and 800m and 1500m Commonwealth champion, Semenya has been in a long-running dispute with World Athletics. Regulations requiring her to have hormone treatment were introduced by the governing body in 2018. Semenya has twice failed in legal battles to overturn the decision. However, the case at the ECHR was not against sporting bodies or DSD rules - but specifically against the government of Switzerland for not protecting Semenya's rights and dates back to a Swiss Supreme Court ruling three years