According to Dr. Sarah Buckley in Gentle Birth, Gentle Mothering, (c) 2005, p 119, the baby secretes beta-endorphins during labor from its own pituitary and from the placenta and hormone levels in the placenta are even higher than in the mother's bloodstream at birth. She cites:
Facchinetti F, et al. Fetal intermediate lobe is stimulated by parturition. Am J Obstet Gynecol 1989;161:1267-70.
Facchinetti F, et al. Changes in beta-endorphin in fetal membranes and placenta in normal and pathological pregnancies. Acta Obstet Gynecol Scand 1990;69:3-7.
Jevremovic M, et al. [The opioid peptide, beta-endorphin, in spontaneous vaginal delivery and cesarean section]. Srp Arh Celok Lek 1991;119:271-4.
-- Henci |