(10-02-06) Excessive Weight Gain during Pregnancy Is Associated with Earlier Termination of Breast-Feeding among White Women.

Hilson JA, Rasmussen KM, Kjolhede CL.

Division of Nutritional Sciences, Cornell University, Ithaca, NY and Mary Imogene Bassett Hospital and Research Institute, Cooperstown, NY.

High prepregnant BMI is associated with reduced initiation and duration of breast-feeding (BF). To examine how gestational weight gain (GWG) might modify this association, over a 9-y period, we identified all women (n = 2783) who had attempted to breast-feed their newborns. From their medical records, we categorized them by prepregnant BMI [as underweight (<19.8 kg/m(2)), normal-weight (19.8-26.0 kg/m(2)), overweight (26.1-29.0 kg/m(2)) or obese ( >29.0 kg/m(2))] and GWG [as below, within, or above the amount recommended by the Institute of Medicine]. Women with a normal BMI who gained within these recommendations served as the reference group in regression analyses, which were adjusted for confounding factors. Both normal-weight (P < 0.05) and obese (P < 0.01) women who exceeded the recommended GWG had higher odds of failing to initiate BF (defined as continuing to breast-feed at 4 d postpartum). Underweight (P < 0.05), overweight (P < 0.05), and obese (P < 0.01) women who exceeded the recommendations for GWG as well as obese women who gained within the recommendations (P < 0.01) had a higher risk of early discontinuation of exclusive BF. Only obese women who gained within or exceeded the recommendations (P < 0.01) for GWG had a higher risk of early discontinuation of any BF. Excessive GWG was associated with a measure of failure to initiate and/or sustain BF in all categories of prepregnant BMI. Thus, in addition to conceiving at a healthy weight, gaining the recommended amount of weight during pregnancy is also important for successful BF.

J Nutr. 2006 Jan;136(1):140-6.

PMID: 16365073 [PubMed - in process]

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