Formula lowers Bilirubins faster, even given equals volumes because of the excess B-glucuronidase in the newbon's intestine (10X adult levels) and in human milk, which deconjugates conjugated bilirubin in the intestine and allows it to be absorbed again into the bloodstream (enterohepatic circulation). As a matter of fact, elemental formulas such as Nutramigen seem to decrease bilirubin much faster than regular formulas. (ref- Gourley GR et al - several studies over the last 15 years- one is Gourley GR, Kreamer B, Cohnen M, Kosorok MR. Neonatal Jaundice and Diet. Arch Pediatr Adolesc Med 1999;153:184-188) Nancy Wight MD, FAAP, IBCLC Neonatology San Diego, CA *********************************************** 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