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Experts Corner


Weight Gain for Twin Pregnancy (or Triplets, etc.)
By Mediconsult's Nutrition Services

Q. I'm expecting multiples. How much weight should I gain?

A. Women expecting two or more babies should have a higher weight gain. If you are expecting twins, a net weight gain at term of about 35 - 45 pounds (16 to 20.5 kilograms) is recommended. If you started your pregnancy underweight, a little more weight gain is desirable. Women starting pregnancy at a heavier weight should gain a little less. Studies have shown that adequate second and third trimester weight gain is very important with twin pregnancies. Weekly weight increases of about 1.5 pounds per week (0.6 kilograms) are desirable at this time and weight loss should be avoided.

If you are expecting triplets or more, your weight gain should be even higher. There isn't enough information about these higher multiple pregnancies to give specific weight targets. Most weight gain goals for pregnant women are calculated based on a full term pregnancy (37 weeks gestation or more) and you are likely to deliver your babies before this if you are expecting three or more. Aim for a weight gain of 1.75 - 2.0 pounds (0.8 kilograms) or more per week in your second and third trimester. Discuss your weight gain with your provider at each prenatal visit.

Tips To Improve Weight Gain
  • Eat often
    Growing babies mean less room for your stomach to expand. Eating more often can compensate for smaller meals.

  • Drink in some calories
    Water takes up the same amount of room in your stomach as fruit juice or milk. Fruit smoothies and milkshakes are great sources of calories.

  • Choose high fiber foods
    Preventing constipation can help your appetite. Fruits, vegetables, whole grains, beans and bran cereals are good high fiber choices.

  • Choose nutrient dense snacks
    Peanut butter, nuts, cheese, dried fruit, granola and yogurt are a few.


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