There are very few women out there who can not BF because of a medical/physical reason.

Rachel, I don't know your or your friends situation but the first thing that sprung to mind with your firends story is something hormonal maybe? Often when AF returns or in the lead up (like when you ovulate), also if pg, or taking the pill, the hormones assosiated can interupt the taste, letdown, supply etc of BM. So I wonder is it possible that one of these things may have been a contributing factor in the situation. Also other things lin life such a sstress, medications etc.

So Yes there are reasons why one may have issues with a low supply. Often with the right support & help they can be overcome & mother & baby can continue to BF. Of course this does not mean that they wont need to supplement with Artifical infant milk. It does have its place for sure. But often mothers are just not given the right support & help to get through it. Its not a failure on the mothers part but it is on the medical system as they are the ones who are meant to be supporting new mothers.