There are four keys to preventing heart defects in developing babies, according to a review of research conducted by the American Heart Association, published in the journal Circulation. Future moms are advised to talk to their doctors about being immunized against rubella and influenza, and should keep an eye on other problems like diabetes.

Daily multi-vitamins with 400 micrograms of folic acid are an important part of pregnancy health, as is watching out for other medication that may be dangerous. Expectant woman should also avoid sick people, especially those with flu or fevers.