The Conversation

Fair play at the Olympics: testosterone and female athletes

Author: Peter Sonksen, Emeritus Professor of Endocrinology, St Thomas' Hospital and King's College, London; Visiting Professor, University of Southampton

Caster Semenya was withdrawn from competition in 2009 on the basis that her higher-than-normal testosterone level conferred a performance advantage.Reuters/Mike Hutchings

There are performance differences between the sexes in elite sport. It has long been assumed that contrasting levels of testosterone in men and women can largely account for that...

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