Most J, et al. - A prospective, observational cohort was performed to assess body composition (plethysmography), energy expenditure (doubly labeled water, and whole-body room calorimetry), physical activity (accelerometry), metabolic biomarkers and eating behaviors in women with obesity during pregnancy and postpartum. By using intake-balance method, they analyzed energy intake for pregnancy, and for two postpartum periods (0 to 6 months and 6 to 12 months). Weight loss occurred in 16 women and weight retention occurred in 21 women during the 18-month observation period. There were no differences in changes of body weight during pregnancy, than women with postpartum weight loss and weight retention. It was found that postpartum weight gain was the outcome of elevated energy intake after pregnancy rather than reduced energy expenditure. Recommendations for dietary intake during the post partum period are required for women with obesity, women should be educated about the risk of overeating after pregnancy.