20+ Psychological Tricks That Can Help You Read People Like Open Books

7. Male nipples

15 Parts of the Human Body That Will Disappear in the Future

Both men and women have nipples because, in the early stages of fetal development, an unborn child is effectively sexless (without gender). Thus, nipples are present in both males and females. Men generally lack the necessary levels of prolactin to stimulate lactation and cannot produce milk.

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