> (mom) pumping prenatally to try to induce labor. We were both
> wondering if this would impact the amount of colostrum she will have once the baby is born, causing her mature milk to come in sooner.

I don't think so. The trigger for mature milk to come in (increasing
levels of prolactin) is the departure of the placenta and its hormones,
notably progesterone, from the mother's body. Pumping to induce labor
won't affect that until labor progresses to delivery!

I don't recall what makes colostrum "colostrum" specifically, but I'm
thinking high levels of placental hormones is what keeps the breasts in
colostrum-mode. I have known of retained placenta for 3+ months and mom
was not pumping colostrum (wasn't pumping much of anything, but it
certainly wasn't colostrum), which is why I'm thinking "high levels" of
progesterone from an entire placenta is what keeps colostrum available.

Katharine West, BSN, MPH
Sherman Oaks, CA