Quoted from java666
This explains to me one possible reason why some mothers crave different things when they are pregnant: the baby has it's own blood type separate from the mother's. Sometimes the baby's blood type happens to be the same blood type as the mother's, sometimes it's a different blood type.
Quoted from exj_j
Not too sure about this, java: Moms can crave some pretty peculiar stuff, and it's not necessarily beneficial for ANY blood type! An O mom carrying an A baby can crave ice cream, for instance, and that's an "avoid" for BOTH types... :)
Quoted from samy
When I was carrying my last, she is now 19, I was very compliant to MY type, no red meat (made me wannna gag), lots of veggies and fruit, a little wine, but not too much. She is a very very healthy "O".