Just posted this on a different board, but it is just as valid for this board also...
Fish oil/omega-3s help with postpartum depression.
Postpartum depression and omega-3 fish oils:
postpartum depression should be of major concern during pregnancy. By adding the omega-3 fatty acid dha to your diet, you can significantly decrease the effects of postpartum depression. Current research shows a link between a mother's dha intake and postpartum depression, the latter of which affects 15-20% of women in the u.S. It is important to remember that fetal development, as well as newborn infant development, depends on the maternal supply of dha. If a mother�s supply of dha is low, the fetus will take most of that supply leaving the mother depleted of dha, thus leading to one possible precursor to the development of postpartum depression condition.