Fact 1: Breastfed babies have a decreased likelihood for allergies.

Fact 2: New studies show breastfeeding may prevent breast cancer by affecting levels of estrogen in a woman's body.

Fact 3: Pregnant women regularly exposed to other people's smoke during pregnancy may be at increased risk of fetal development problems.

Fact 4: During the second and third trimesters, pregnant women should avoid exercising while lying on their backs.