Postpartum Weight
IOM (1990) concluded that childbearing is associated with average weight gain of 1kg.
There is a large variation in differences between prepregnant weight and weight at 6 to 12 months postpartum (SD of 4.8 kg)
Analysis is confused by the tendency to gain weight with aging
Years between 25 and 34 are times when American women are most vulnerable to major weight gain