Bathroom ScaleDoctors generally recommend that a woman who is pregnant with one baby, and starts off her pregnancy at a normal weight, gain between 25 and 35 pounds during pregnancy. Gaining too little weight during pregnancy increases the risk of having a low birth weight baby. However, gaining extra weight is dangerous too, putting moms at increased risk for gestational diabetes, high blood pressure and delivery complications.

The proportion of women gaining 40 or more pounds during pregnancy increased from 15% in 1995 to 20% in 2005. A pregnancy weight gain of 40 pounds is rarely recommended by a doctor, unless a mother starts off her pregnancy underweight, or is carrying more than one baby. If you’re wondering how much weight gain is ideal during a singleton pregnancy, check out the chart below based on the Institute of Medicine guidelines for total weight gain during pregnancy.

Pre-Pregnancy BMI

Recommended Weight Gain

<19.8

28-40 lb

19.8-26.0

25-35 lb

26.1-29.0

15-25 lb

>29.0

15 lb



If you’re trying to maintain a healthy pregnant weight, typically a well rounded diet with about 300 extra calories per day will work. So, the old phrase “eating for two” is clearly a misnomer.

If you’re interested in figuring out your BMI, you can find an online BMI calculator and BMI tables here.

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