Here is some diet advice that all pregnant women have been waiting for: a new study from Yale finds that women who ate five or more servings of chocolate each week during their third trimester were 40% less likely to develop preeclampsia - a serious complication of pregnancy marked by high blood pressure.
Researchers think the key is a chemical in chocolate called theobromine, which may improve circulation. Dark chocolate is particularly rich in theobromine.
The study included 2,291 pregnant women who delivered a single child between September 1996 and January 2000 and was published in the May 2008 edition of Epidemiology. Researchers also studied theobromine concentrations in umbilical cords.