>Also, Native Nutrition by Ronald Schmid has some information on the effects
>of diet on pregnancy and breastfeeding.  You can also research the
>following website which has some information on problems with
>Vegan/Vegetarian prenatal diets and the impportance of Omega 3 fatty acids.
>http://www.best.com/~falcao/archives/nutrition.html#General

And the potential dangers to expectant mothers and infants are
highlighted in this article:

http://www.chetday.com/vegandietdangers.htm

Cheers,
Jo