Nov 11, 2025 07:27 PM
IOC likely to announce new policy early in new year after findings of a scientific review about the permanent physical advantages of being born male
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The committee’s medical and scientific director, Dr Jane Thornton, last week presented to IOC members at a meeting in Lausanne the initial findings of a science-based review into transgender athletes and competitors with differences of sexual development (DSD) competing in female sport.
Sources said the presentation by Thornton, a Canadian former Olympic rower, stated that scientific evidence showed there were physical advantages to being born male that remained with athletes, including those who had taken treatment to reduce testosterone levels.
“It was a very scientific, factual and unemotional presentation which quite clearly laid out the evidence,” one source said. Another IOC insider said there had been hugely positive feedback from IOC members about the presentation.
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