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What determines a baby's weight? Is it a matter of how much weight a mother gains?

9 doctors weighed in
Marianne DiNapoli
Obstetrics & Gynecology
8 doctors agree

In brief: Many factors

A baby's weight is determined by many factors.
The size of the parents, weight gain during pregnancy, maternal diseases (such as diabetes), and environmental factors (such as smoking) can all affect the weight of the baby. It is typically advised for an average weight woman to gain about 25 pounds during pregnancy. Ask your doctor if concerned about your weight and it's impact on the baby.

In brief: Many factors

A baby's weight is determined by many factors.
The size of the parents, weight gain during pregnancy, maternal diseases (such as diabetes), and environmental factors (such as smoking) can all affect the weight of the baby. It is typically advised for an average weight woman to gain about 25 pounds during pregnancy. Ask your doctor if concerned about your weight and it's impact on the baby.
Marianne DiNapoli
Marianne DiNapoli
Answer assisted by Marianne Di Napoli, Medical Student
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