I found an article that has some discussion on this subject. They looked at breastfed babies who had been readmitted within 48 hours of discharge, and six of 8 were circumcised, 5 of the 8 were LGA. They speculate that the circumcision could have contributed to their feeding difficulties. Breastfeeding, Dehydration, and Shorter Maternity Stays, in Neonatal Network Vol 15, No.7, October 1996, p 37-43 Fritzi Drosten