Fetal imprinting, perhaps. It'd be hard to quantify. But with all the societal shifts occurring around the 70's, economics drastically shifted. I'm not even goi

Fetal imprinting, perhaps. It'd be hard to quantify. But with all the societal shifts occurring around the 70's, economics drastically shifted. I'm not even going to pretend like I know anything about maternity, but with the constant slew of shit the modern human has to deal with, usually something somehow novel, I'd be willing to point fingers at a shift in the baseline hormone profile before during and after pregnancy. Particularly in fetal development. There's undoubtedly research on the effects of elevated glucocorticoid levels in pre-, during, and postnatal development. But that's only one end.