this post was submitted on 29 Sep 2024
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I wonder if there is any evolutionary advantage to larger breasts. AFAIK, there's no difference in their ability to deliver milk to babies. And smaller breasts probably have an advantage in a woman's movement and agility, not to mention avoiding back pain. Humans also seem to be the only animal that has larger breasts than necessary -- OTOH, humans are also the only mammal that walks upright, so there are other biological differences.
If it's the case that the only evolutionary reason for large breasts is to better attract (some) men, that would be interesting.
Milk cows have larger breasts than necessary, but that's from artificial breeding rather than any sort of evolution or adaptation.
Their larger breasts are necessary since they require a high milk output to reproduce effectively (due to selective pressure of breeding)
Just because the pressure is not "natural" doesn't mean its not real.