“Former Olympic swimmer Sharron Davies has backed the decision for testosterone levels to be reduced in athletes with a difference in sex development (DSD), saying that Caster Semenya has had a “huge” advantage over her opponents.

“Semenya, a double Olympic champion over 800 meters, lost an appeal to the Court of Arbitration of Sport (CAS) on Wednesday, meaning she will have to take medication to reduce her testosterone levels if she wants to compete internationally at events between 400 meters and a mile.

“South African Semenya is hyperandrogenous, a medical condition estimated to occur in five to 10% of women that results in elevated levels of testosterone.”

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