Does Breastfeeding Increase FSH?

Does Breastfeeding Increase FSH? Does breastfeeding increase FSH? During breastfeeding the plasma concentrations of FSH increase rapidly after birth. By four weeks post- partum, they are within the normal early follicular range, whether or not breastfeeding occurs [10]. Is FSH high during breastfeeding? For lactating women, FSH in the 1st year is in the high