Too many women gain too much weight during pregnancy, CDC says

A pregnant woman eats for two, as the saying goes. But in the United States, a lot of them are eating for three or more. A new study from the Centers for Disease Control and Prevention finds that nearly half of the pregnant women in American gain too much weight during their pregnancies. Women who are overweight or obese before they become pregnant are most likely to add too many additional pounds during those crucial nine months. The Institute of Medicine recommends that women with a body mass index in the normal range (between 18.5 and 24.9) gain 25 to 35 pounds during the course of a pregnancy. Women who start out underweight (with a BMI below 18.5) should put on 28 to 40 pounds...