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Home > Health Library > Pregnancy: Healthy Weight Gain
During pregnancy, lots of women wonder about how their body will change and how much weight they will gain. Maybe this is something that you've been thinking about too.
Weight gain is healthy and normal when you're pregnant. And there's no fixed number of pounds that you should be aiming for. Instead, there's a range of weight gain that's good for you and your baby.
Ask your doctor what your range is for healthy weight gain. It's based on your health, your pregnancy, and your weight before pregnancy.
If you're worried about weight gain during pregnancy, try not to focus too much on the numbers. Think more about having a healthy pregnancy by being active and feeding your baby with healthy foods.
Gaining too much or too little weight raises some health risks for you and your baby.
Gaining too much weight when you're pregnant can raise your risk of having a large baby. If your newborn is 10 lb (5 kg) or larger, you may be more likely to have:
Also, a newborn who is 10 lb (5 kg) or larger may become overweight or obese later in life. That could mean that he or she will have a higher risk of type 2 diabetes.
Gaining too much weight during pregnancy can also make it harder to lose that weight later on.
And if you are very overweight (obese) during pregnancy, you have greater risks for:
Gaining too little weight when you're pregnant raises your baby's risks for early birth, and for low birth weight and size. When this happens, a newborn is at greater risk for:
Pregnancy is not the time to diet. Your baby needs you to eat a wide variety of foods. Focus on eating a lot of vegetables, fruits, whole grains, and low-fat dairy and meats. Stay away from sugars and fats as much as you can.
If you have morning sickness and lose weight during your first trimester, your baby is unlikely to be affected. Just be sure your doctor knows. Get help with nausea and vomiting, if needed.
Based on your weight before pregnancy, experts say it is generally best to gain about:
Ideally, you will gain weight slowly over your whole pregnancy. If you stop gaining weight for more than 2 weeks, or if you gain weight faster than expected, talk to your doctor.
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 in their second trimester need to eat about 340 extra calories a day. Women in their third trimester need to eat about 450 extra calories a day.footnote 1 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:
Work with your doctor or a dietitian to help you plan healthy meals and the right amount of calories for you.
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.
Current as of:
June 16, 2021
Author: Healthwise StaffMedical Review: Sarah Marshall MD - Family MedicineAdam Husney MD - Family MedicineKathleen Romito MD - Family Medicine
Current as of: June 16, 2021
Author: Healthwise Staff
Medical Review:Sarah Marshall MD - Family Medicine & Adam Husney MD - Family Medicine & Kathleen Romito MD - Family Medicine
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