Breast feeding
- Effective contraceptive: prolactin
- Nursing pattern difference
- Modern: hourly sessions, for 6 months - prolactin drops
- Ancestral: minutes around the clock, for 3 years - prolactin stays high
Periods: not meant to be this often
Think about it: over the course of her life span, she has perhaps two dozen periods. Contrast that with modern Western women, who typically experience hundreds of periods over their lifetime. Huge difference. The hunter-gatherer pattern, the one that has occurred throughout most of human history, is what you see in nonhuman primates. Perhaps some of the gynecological diseases that plague modern westernized women have something to do with this activation of a major piece of physiological machinery hundreds of times when it may have evolved to be used only twenty times; an example of this is probably endometriosis (having uterine lining thickening and sloughing off in places in the pelvis and abdominal wall where it doesn’t belong), which is more common among women with fewer pregnancies and who start at a later age.
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Reproduction can be highly resistant to stress
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