Yes, Men Can Lactate — Here’s How (and Why It Happens)

It sounds impossible, but men can actually produce breast milk under the right conditions. Learn what causes male lactation and why it’s more common than you think.

Rare Viral Facts

7/22/20251 min read

Most people assume that lactation is only for women — but it turns out, under the right conditions, men can actually produce breast milk too.
Yep, really.

Men have milk ducts, mammary glands, and nipples — just like women. The only difference is that male bodies typically don't produce the hormone prolactin in high enough amounts to trigger milk production.

But in rare situations, male lactation can happen due to:

  • Hormonal imbalances (such as increased prolactin or estrogen)

  • Medications that mimic hormonal changes

  • Extreme stress or starvation (seen during historical famines or POW survival)

  • Certain health conditions, like tumors on the pituitary gland

In fact, male lactation has even been observed in some animals — including bats, which are one of the only mammals where males regularly produce milk to help feed their young.

So while it's not common... it’s very possible.
Biology is weird — and kind of amazing.

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