Andrew Huberman· PhD
And a lot of people have actually heard about hyperthecosis, not the term itself. But a lot of Olympians that are, their chromosomes are XY, they're females, and they're not taking any- - Wait, they're XY, but they're females? - Or sorry, they're XX. - Oh, okay. - Yeah. Thank you. So they're XX, they're not XY, and they have never transitioned or been on any sort of hormone replacement or testosterone, but they naturally produce a huge amount of testosterone, as much as many men. And some of these women, I believe they were from Botswana, were banned from competing in the Olympics in certain distances. I believe they were banned from the 400 meter and 800 meter, because their natural testosterone was deemed to be too high.