Higher body-mass index leads to greater risk of malformations.
Expectant mothers who are overweight or obese are at increased risk for having infants with congenital malformations. The higher their weight, the greater the risk. Using data from Swedish health registries, researchers found overweight mothers (BMI 25-29.9) had a 5% greater risk. This risk increased incrementally to 37% for obese mothers with BMIs of 35-39.9.
PositiveTip: Women planning to bear children should be encouraged to attain normal weight before pregnancy.