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South African two-time Olympic 800m champion Caster Semenya has been ordered to medically suppress her unusually high levels of naturally-present testosterone, if she is to continue high level competition.
Following an International Association of Athletics Federations (IAAF) ruling aimed at women who naturally produce high levels of testosterone, Caster lost an appeal to the Court of Arbitration for Sport. South Africa's governing body for track and field in now set to appeal this decision.
Kathryn Ryan speaks with Dr. Anthony Hackney, Professor of Exercise Physiology & Nutrition, University of North Carolina, USA.
Dr Anthony Hackney and other experts presented at the court of arbitration on Caster's behalf, saying "the association of testosterone to improved athletic performance is not a perfect linear relationship", arguing there is simply not enough research done to prove the relationship.
