Breastfeeding medicine : the official journal of the Academy of Breastfeeding Medicine
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In the United States, a high percentage of pregnant women gain weight outside of the current Institute of Medicine's (IOM) gestational weight gain (GWG) recommendations. There is limited research examining the relationship between GWG and onset of lactation. Delayed onset of lactation (DOL) can negatively affect breastfeeding outcomes. ⋯ With the increasing rates of excessive GWG, it is critical to identify populations at increased risk of DOL and provide targeted breastfeeding support, especially in the early postpartum period.