When You're Expecting Twins, Adding Pounds Earlier Is A Good Thing
In the past, most women who were pregnant with twins were advised to gain 35 pounds to 45 pounds, regardless of their pre-pregnancy size. But more recent guidelines from the Institute of Medicine are individualized to give twins a greater chance to be born healthy to a healthy mother.
"The newer weight-gain guidelines are tailored to your pre-pregnancy body mass index [BMI]," says Susanne Tout, R.D., L.D., IBCLC, clinical program coordinator and dietitian at the Texas Children's Hospital Fetal Center Program for Multiples in Houston.
Also important is seeing consistent weight gain throughout pregnancy, specifically before 28 weeks; this significantly decreases prematurity, increases birth weights and reduces newborn mortality. If your pre-pregnancy BMI was normal (18.5 to 24.9), experts now recommend gaining 37 pounds to 54 pounds; 20 to 30 pounds by 20 weeks; and 30 to 46 pounds by 28 weeks and the rest in the last trimester. Other recommendations for women pregnant with twins:
- OVERWEIGHT (BMI 25 to 29.9) — Gain 31 to 50 pounds
- OBESE (BMI 30-plus) — Gain 25 to 42 pounds
- UNDERWEIGHT (BMI <18.5) — Because of insufficient data, no guidelines are available