monkeypussnz wants to know if since 1/3 of new mothers in New Zealand suffer from post-partum depression
could this be a form of population control 'ala Anderea Yates?' Because clearly, 1/3 of the mothers in the world are killing off their babies.
I mean, maybe it could be a legitimate question - if you really wanted to know WHY post partum depression happens, not make it sound like mom's are killing babies left and right. The link someone posted says more about social reasons for post-partum than it does about evolutionary reasons anyhow.