Yes Cortisol passes into breast milk. The reaearch says it shapes infant temperment.
I would think that if we are addressing the mothers mental health or mood disorder we could help change her levels elevated Cortisol.http://linkinghub.elsevier.com/retri...78378207000047
However In moms who do not have a mood disorder (PPD) I see the moms get stressed after the baby is "colicky" not before and where the stress is making them colicky. They get over stressed when they can not read the cues or sooth the baby.
Usually when I meet a "colicky" baby I first ask if the mother is still drinking glasses of cow milk each day (she has to stop that)!!! Then breastfeeding management issues (99.9% it is breastfeeding management problem) when they are addressed it changes the baby's "colicky".
In 18 years I have met a couple of babies that I could not figure out (after breastfeeding was corrected). But probiotics and better diet with and no dairy seemed to solve most of it after better breastfeeding management was addressed.
Read on www.Kellymom.com
foremilk hindmilk imbalance
overactive let down