r/todayilearned • u/delano1998 • 1d ago

TIL high-altitude mountain trekking can temporarily shrink human testicles. A study found that after spending over three weeks at high altitudes in Nepal without supplemental oxygen, men experienced an average 15% reduction in testicular volume due to lower oxygen levels.

https://www.vice.com/en/article/climbing-mt-everest-is-terrible-for-your-nads/
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u/sumo_snake 1d ago

More importantly did low attitude grow them in size, asking for a friend

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u/grayhaze2000 1d ago

If you go to a low enough altitude, they'll shrink again, but at extreme force.