Calcium requirements of lactating Gambian mothers : effects of a calcium supplement on breast-milk calcium concentration, maternal bone mineral content, and urinary calcium excretion.
The calcium requirement for prolonged lactation was investigated in a randomized supplementation study of Gambian mothers consuming a low-calcium diet (7.1 mmol/d, or 283 mg/d).
Sixty women were studied from 10 d to 78 wk of lactation, receiving calcium or placebo for the first 12 mo.
The supplement increased average calcium intake by 17.9 mmol/d (714 mg/d).
Supplementation had no effect on breast-milk calcium concentration or on maternal bone mineral content.
Urinary calcium output was higher in supplemented than in unsupplemented mothers by 1.18 mmol/d (47 mg/d), P ¾ 0.005.
Longitudinal changes in urinary calcium output and bone mineral content made a substantial contribution to calcium requirements for lactation.
This study suggests that, in women with low calcium intakes, there is no direct benefit from increasing calcium intake during lactation, and that physiological mechanisms operate to furnish calcium for breast-milk production.
Am J Clin Nutr 1995 ; 62 : 58-67.
Mots-clés Pascal : Gambie, Afrique, Homme, Femelle, Lactation, Besoin nutritif, Calcium, Régime alimentaire enrichi, Lait femme, Os, Excrétion, Composition chimique, Métabolisme, Nutrition, Elément minéral, Alimentation
Mots-clés Pascal anglais : Gambia, Africa, Human, Female, Lactation, Nutrient requirement, Calcium, Supplemented diet, Human milk, Bone, Excretion, Chemical composition, Metabolism, Nutrition, Inorganic element, Feeding
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 95-0462221
Code Inist : 002B29B. Création : 01/03/1996.