Richard Geller said (hey, folks, please learn to paraphrase or shorten info
from previous posts when responding; it's the law on this list!  :-,)

> I have read about a study that showed that women with morning sickness had
> more successful pregnancies statistically. I have also read speculation that
> morning sickness is a benefit because when the fetus is most vulnerable, the
> early stage of pregnancy, morning sickness increases the woman's sensitivity
> to potential fetal toxins including those found naturally in food.

I don't buy it.  First of all, many studies are terribly marred by poor
design and bias.  I doubt that had controlled for they myriad factors.
Furthermore, if a woman is sick to her stomach,  it doesn't prevent her from
eating crappy food---it prevents her from eating.  Moms I know who report of
morning sickness often end up eating strange and terribly innutritious
diets.  One I know said, all she wanted to eat was potatoes---protein didn't
appeal to her.  Others eat Saltine crackers, or candy, or things with little
or no redeeming value.  Some are sick, like Siboan, morning, noon and night.
If your theory was correct, they'd all crave meat, fish, fowl, eggs,
veggies, fruits and nuts and be unable to eat the foods of commerce.  Habit
and brainwashing seem to dictate people's food choices more than physical
bodily needs, whether pregnant or not!

Rachel