basically like. why do women just have breasts all the time when to my knowledge the only purpose of them is to feed children. why don’t they go away like other mammals’ when you haven’t had a child.
In: Biology
Attraction and limited resources.
Breasts are a fertility indicator. Males recognize that, so females with noticeable breasts have a reproductive advantage.
Pregnancy is extremely taxing on the body. On top of the gradual development of a baby, the female body is already undergoing significant changes with the abdomen, hips, pelvis, and breasts. It’s a huge amount of change without adding in full breast development. It’s common to need to take vitamins and supplements just to not end up deficient in a swathe of nutrients already. It might just be too taxing on the body to form breasts exclusively during pregnancy (or at least too taxing to be favourable).
Edit: Several have already pointed it out, but fertility indicator as in a broad sign of both health and sexual maturity. Particularly given the context of food insecurity experienced for much of our pre-history, having the means to acquire enough calories to support the development of larger breasts points to much greater chance of surviving offspring.
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