Approximately 3-5 percent of all pregnant women in the United States develop gestational diabetes while pregnant. Gestational diabetes disappears after delivery, but careful control of blood sugar levels is necessary in order to manage and prevent complications. Understanding Gestational Diabetes: A Practical Guide to a Healthy Pregnancy answers questions about diet, exercise, measurement of blood sugar levels, and general medical and obstetric care for women with gestational diabetes. Questions addressed include: Will gestational diabetes hurt your baby? How will it affect labor and delivery? What foods help keep blood sugar levels normal? And how much weight should you gain? For your free booklet, contact National Institute of Child Health and Human Development, National Institutes of Health, Building 31, Room 2A32, 9000 Rockville, Pike, Bethesda, MD 20892; 301-496-5133.