HIGH RISK PREGNANCIES A high-risk pregnancy is one of greater risk to the mother or her fetus than an uncomplicated pregnancy. Pregnancy places additional physical and emotional stress on a woman’s body. Health problems that occur before a woman becomes pregnant or during pregnancy may also increase the likelihood for a high-risk pregnancy. The NICHD is one of many federal agencies working to improve pregnancy outcome, prevent high-risk pregnancy, and improve health outcomes for pregnant women who are at high risk. The NICHD supports and conducts research on the causes and optimal management of the high-risk pregnancy.