BBC Future

Why do men have nipples?

And aren’t they pointless? Earth Unplugged lifts the lid on perhaps the ultimate male mystery.

Pointless, aren’t they, but why do men have them?

Maddie Moate and Simon Baxter reveal that the reason men have nipples is because women do. It hasn’t been written out of our development programme, the early stages of embryo follow a female blueprint until the testosterone kicks in. And some men can lactate too – scroll to 3:00 to find out more.

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