keeping their unborn children from "drinking" their mother's blood while in utero

Interesting points Dr Bill. I don't know anyone that I know to be vegan, but I could imagine easily enough that their reluctance to use any animal products would disappear if the animal product in question were known to be given with completely informed consent, as would be the case with anything given by a mother from her own body to an unborn (or even born) child or with any blood donations but would definitely not be the case with anything taken from any non-intelligent animal. As I understand it the philosophy behind veganism is not a matter of health but of concern for the oppression of other species of animal. Let it be known that I am not a vegan and I do not wish to defend their point of view. I do think it is best to understand what it really is before criticizing it.