Can obesity prevention begin before birth?

David Ludwig’s research from Children’s Hospital, Boston found that women who gain excessive weight during pregnancy tend to give birth to heavier infants.  For example, women gaining 44 to 49 pounds were 1.7 times more likely to have a high birth weight baby than those gaining just 18 to 22 pounds. Women who gained more than 53 pounds were 2.3 times more likely to do so. Because our study involved comparisons of infants born to the same mother, we can be confident that this effect is not due to genetics.