We were just on the radio and were joined by a Cardiologist who gave a benefit I had not heard related to the maturing of the circulatory system in newborns. He relayed a study (but did not have the specifics, so I'm asking my LactNet Friends if you know) which stated that there is a faster maturation of the circulatory system in breastfed babies. Therefore, in children who have patent Ductus Arteriosus or Foramen Ovalae, it is possible to delay surgery (if they are normally healthy) and these fetal circulatory system remnants will mature and resolve on their own. As this had just been the case with a young cousin of mine (baby had a heart murmur, but a month later after close watching by the ped. the murmur has disappeared - baby totally bf), I'm now wondering if you know of this study and what it implies for other children. Jeanette Panchula, BSW, LLLL, IBCLC, RN Puerto Rico [log in to unmask]