>>If the mom was receiving adequate replacement for her thyroid, then she would be in a "euthyroid" state, ie: normal thyroid gland function. If her thyroid in her body was a normal, adequate amount then it would have no bad effect on breastfeeding. Sort of sounds like there is more going on here and thyroid is getting the "blame."<< Patrician, could still be thyroid; read on: Miyake A; Tahara M; Koike K; TAnizawa O. Decrease in neonatal suckled milk volume in diabetic women. (1989) Eur J Obstet Gynecol Reprod Biol, Oct 33(1):49-53. Abstract quotes: "The amounts of suckled milk produced by patiesnt with diabetes mellitus and hypothyroidism were significantly less than those in other groups (other groups included hyperthyroidism, ovulatory disturbance, and normal); there was no significant difference in milk production in the other groups........... These data suggest that neonatal suckled milk volume in diabetic women is decreased, and that hypothyroidism may influence the initiation of lactation even **when the patients are euthyroid due to treatment**." Lisa Marasco IBCLC *********************************************** The LACTNET mailing list is powered by L-Soft's renowned LISTSERV(R) list management software together with L-Soft's LSMTP(TM) mailer for lightning fast mail delivery. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html