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user-inactivated · 3846 days ago · link · · parent · post: What is the evolutionary reason for male facial hair, while women don't have it?
YES I LINKED THAT WIKIPEDIA PAGE DOWN THERE EXPERT STATUS EDIT: I also know from r/askscience that the orgasm question is ongoing. I think one hypothesis is that it makes women enjoy sex more, which leads to more reproduction. Makes sense to me on a surface level.Your brother is not necessarily wrong - there is a hormonal basis for the lack of female facial hair. The real evolutionary cause is facial neoteny.