The thorny issue of testosterone testing has made news, not just the growing skills on the field.
Although the medical establishment is now recognizing that sex is not binary, society as a whole has been slow to embrace the concept.
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Millions of people do not fit neatly into male or female sex designations at birth, and wrong identification can set them up for a lifetime of physical and mental harm.
Beatrice Masilingi (left) celebrates with her Namibian teammate and silver medal winner Christine Mboma at the Tokyo Olympic Games.
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