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The Effects of lactation on energy and protein consumption, postpartum weight change and body composition of well nourished North American women



The Effects of lactation on energy and protein consumption, postpartum weight change and body composition of well nourished North American women



Nutrition research 3(3): 293-308



The effect of lactation on caloric intake and body composition of 27 well-nourished women during the first 3 months postpartum was studied. The degree of lactation was estimated on a scale from 100% (exlcusive breastfeeding) to 0% (exclusive bottle feeding). Women at 12 days postpartum had a mean weight of 6.0 kg above pre-pregnancy weight, and lost a mean 2.0 kg during the 3 subsequent months on calorie intakes averaging 2178 kcal/day. Anthropometric measurements decreased at trunk, but not limb, sites and 24-hour urinary creatinine excretion values, reflecting increase or decrease lean body mass, remained unchanged. Weight loss increased as caloric intake decreased, but % lactation correlated with caloric intake. The results suggest that breastfeeding does not promote weight loss in well-nourished women, and that the RDAs for caloric intake during lactation may be too high. (wz)

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Accession: 013202817

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