Pregnancy is one time in your life when it's perfectly acceptable to put on pounds. But it's important to have slow and steady gain and to keep your weight within healthy range for your body type. Here are some general guidelines—be sure to ask your healthcare provider for specific recommendations.
First, rate your pre-pregnancy weight using this formula.
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Then use your ranking to figure out how much weight to gain during pregnancy:
Underweight before pregnancy: 28-40 pounds
Normal weight before pregnancy: 25-35 pounds
Overweight before pregnancy: 15-25 pounds
Obese before pregnancy: 11-20 pounds
If you’re carrying twins, pregnancy weight gain should vary slightly:
Underweight before pregnancy: 50-62 pounds
Normal weight before pregnancy: 37-54 pounds
Overweight before pregnancy: 31-50 pounds
Obese before pregnancy: 25-42 pounds
Gain 0 to 1 1/2 pounds per month for a total of 1-4.5 pounds.
Consume the same amount or no more than an extra 150-200 calories a day (for example, a glass of skim milk, and two slices of turkey breast).
Gain about 1 pound per week for a total of 12 to 14 pounds.
Consume an extra 300 calories a day (for example, a cup of carrot-orange juice and a cup of low-fat fruit-flavored yogurt).
Gain 3/4 to 1 pound per week (weight gain often slows during the last month) for a total of 10 to 14 pounds.
Consume an extra 300-450 calories a day (for example, a cup of low-sodium tomato juice and a small whole-grain bagel spread with low-fat cream cheese).
In an average pregnancy, weight gain is distributed as follows:
Baby = 7-8 lbs.
Placenta = 1.5 lbs.
Increased fluid volume = 3-4 lbs.
Increased blood volume = 3-4 lbs.
Amniotic fluid = 2 lbs.
Enlarged uterus = 2 lbs.
Enlarged breasts = 2 lbs.
Stored fat and protein (important for lactation) = 6-8 lbs.