Pregnant women don't always need to eat for two. That's the bottom line in a study of 120,000 pregnant women classified as obese before they got pregnant.
Right now, normal weight women are advised to gain between 25 to 35 pounds during pregnancy. It's recommended that obese women gain no more than 25 pounds, but those guidelines were established nearly 20 years ago.
Now, the Institute of Medicine is rethinking that since new research shows that for obese women, gaining just 9 pounds gave the women a lower chance of developing complications during that pregnancy and a greater chance of having a normal weight baby.
The reason? Obesity can increase the chance a woman will have a miscarriage or develop gestational diabetes.