My take on this is that it is exogenous iron, but also the fact that other foods (solid or liquid) are given that messes up the nice breast milk/lactoferrin cycle. Gut flora changes etc. So if you have to supplement, you supplement with formula with iron. I'm off to the LLL of NJ conf. Sat. My talk is on hypothermia, hypogylcemia and hyperbilirubinemia. After I say not to separate mom and baby or all these things can happen, I'm still not sure what else I'm going to say :-) Sincerely, Pat in SNJ *********************************************** 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