Here's another reason to eat right during pregnancy: A compelling new study out of Children's Hospital Oakland Research Institute (CHORI) in California suggests that what an expectant mom eats can affect not only her child but her grandchild as well. Researchers fed pregnant mice supplements to change the fur color of their offspring. When those babies grew up and had babies of their own, the fur color of the third generation remained changed, even though they were not given the supplements. "These results show that environmental factors can change the way a gene behaves for two generations," says lead study scientist David Martin, MD