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Home > Patient & Family Resources > Health Library > Obesity and Pregnancy
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Most pregnant women have healthy babies—and that includes women who are obese. But being very heavy does increase the chance of problems.
Babies born to mothers who are obese have a higher risk of:
Mothers who are obese have a higher risk of:
If you're not pregnant already, being obese can make it hard to get pregnant.
But if you are obese, you can do a lot to improve your chances of having a healthy pregnancy.
Work with your doctor to get the care you need. Go to all your doctor visits, and follow your doctor's advice about what to do and what to avoid during pregnancy.
No. Pregnancy is not the time to lose weight. Your baby needs you to eat a well-rounded diet. Don't cut out food groups or go on any type of weight-loss diet.
Experts recommend that obese women gain between 11 and 20 pounds.footnote 1 Your doctor will work with you to set a weight goal that's right for you. In some cases, a doctor may recommend that a woman not gain any weight.
Although pregnant women often joke that they're "eating for two," you don't need to eat twice as much food. In general, pregnant women need to eat about 340 extra calories a day in their second trimester. Women in their third trimester need to eat about 450 extra calories a day.footnote 2 You can get about 340 calories in a peanut butter sandwich. Having a cup of 1% milk with a peanut butter sandwich is about 450 calories.
How much you can eat depends on:
Like any pregnant woman, you need to eat a variety of foods from all the food groups. You especially need to make sure to get enough calcium and folic acid.
You may want to work with a dietitian to help you plan healthy meals to get the right amount of calories for you.
You will have the same number of doctor visits as a woman of average weight, unless you start to have problems. Then you would see your doctor more often. But you'll have the same type of tests to look for problems and make sure your baby is healthy.
The best things you can do to have a healthy pregnancy are to eat a variety of foods, get regular exercise, avoid alcohol and smoking, and go to your doctor visits. If you didn't exercise much before you got pregnant, talk to your doctor about how you can slowly get more active.
For more information on healthy habits, see the topic Quick Tips: Healthy Pregnancy Habits.
For more information on eating well when you're pregnant, see:
If you're not yet pregnant, now is a good time to try to lose some weight. Losing even 5 or 10 pounds may help reduce your risk for problems.
You also can make other lifestyle changes to get a future pregnancy off to a good start. These include getting enough folic acid, avoiding alcohol and smoking, and avoiding or limiting caffeine. See your doctor for a checkup before you become pregnant.
For more information on getting ready for pregnancy, see the topic Preparing for a Healthy Pregnancy.
Some women may want to have weight-loss surgery. If you're thinking about it, talk with your doctor to learn how it might affect a future pregnancy. For more information, see the topic Pregnancy After Bariatric Surgery.
American College of Obstetricians and Gynecologists (2021). Obesity in pregnancy. ACOG Practice Bulletin No. 230. Obstetrics and Gynecology, 137(6): e128–e144. DOI: 10.1097/AOG.0000000000004395.
Kaiser LL, Campbell CG (2014). Practice paper: Nutrition and lifestyle for a healthy pregnancy outcome. Journal of the Academy of Nutrition and Dietetics, 114(7): 1099-1103. http://www.eatrightpro.org/resource/practice/position-and-practice-papers/practice-papers/practice-paper-nutrition-and-lifestyle-for-a-healthy-pregnancy-outcome. Accessed November 16, 2017.
Food and Nutrition Board, Institute of Medicine (2009). Weight Gain During Pregnancy: Reexamining the Guidelines. Washington, DC: National Academies Press. Also available online: http://iom.edu/Reports/2009/Weight-Gain-During-Pregnancy-Reexamining-the-Guidelines.aspx.
Current as of:
June 16, 2021
Author: Healthwise StaffMedical Review: Sarah Marshall MD - Family MedicineKathleen Romito MD - Family MedicineAdam Husney MD - Family MedicineElizabeth T. Russo MD - Internal MedicineRSURemoved
Current as of: June 16, 2021
Author: Healthwise Staff
Medical Review:Sarah Marshall MD - Family Medicine & Kathleen Romito MD - Family Medicine & Adam Husney MD - Family Medicine & Elizabeth T. Russo MD - Internal Medicine & RSURemoved
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