That is true. Formula doesn't have those antibodies. And it's true the poster is stupid, since the link between formula feeding and childhood obesity is tenuous at best, and some research suggests that the opposite may be true and breastfeeding is more of a childhood obesity risk than formula. I just really hate the Breast Nazis who act like women are irresponsibly hurting their babies if they don't breastfeed, and I loathe the pressure put on women these days in hospitals especially--doing away with nurseries, doing away with formula samples. IMO it's extremely harmful to new mothers; I know it harmed me, and I'm not the only one (and it's killed at least one baby I know of). I watched the lactation consultant bring a new first-time mother to tears at one of those mandatory hospital-led "Caring for your new baby" classes when my second was born, and the memory still infuriates me over fourteen years later--and I breastfed #2 for seventeen months and loved it, so it's not like I have a problem with breastfeeding. It's just that there's nothing wrong with formula, either, and women should not be shamed for giving it to their babies.