VITAMIN-C NUTRITION DURING PROLONGED LACTATION - OPTIMAL IN INFANTS WHILE MARGINAL IN SOME MOTHERS
VITAMIN-C NUTRITION DURING PROLONGED LACTATION - OPTIMAL IN INFANTS WHILE MARGINAL IN SOME MOTHERS
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DOI：
10.1093/ajcn/40.5.1050
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发表时间：
1984-01-01
影响因子：
7.1
通讯作者：
SALMENPERA, L
中科院分区：
文献类型：
--
作者：
SALMENPERA, L
母亲们实行长时间母乳喂养，希望改善婴儿的健康和预防疾病。在这项关于母乳喂养营养充足性的研究中，鼓励200名健康足月新生儿的母亲完全母乳喂养。6个月时116名婴儿和9个月时36名婴儿仍然是纯母乳喂养。对照组婴儿提前断奶，通过补充配方奶和固体食物摄入维生素C。纯母乳喂养的婴儿能够将血浆维生素C浓度维持在与维生素C补充对照组相同或更高的浓度。他们的血药浓度约为。是母体浓度的2倍。它相对独立于母亲的营养和牛奶中维生素C的浓度。母亲的维生素C摄入量影响了他们的血浆和牛奶浓度。约6%的母亲血浆浓度低于正常水平，但无症状。最低浓度发生在产后2个月和春季。因此，纯母乳喂养的婴儿可以很好地防止维生素C缺乏症，但哺乳母亲的少量摄入比营养良好的人群更常见。
Prolonged breast-feeding is practiced by mothers in the hope of improving their infants'' health and preventing diseases. In this study of the nutritional adequacy of breast-feeding, 200 mothers with healthy, full term newborns were encouraged to breast-feed exclusively. At age 6 mo. 116 infants and at age 9 mo. 36 infants remained exclusively breast-fed. The control infants were weaned early and they received vitamin C through a supplemented milk formula and solid food. The exclusively breast-fed infants were able to maintain their plasma vitamin C concentration at the same or a higher concentration than the vitamin C-supplemented controls. Their plasma concentration was .apprx. 2-fold compared with the maternal concentration. It was relatively independent of maternal nutrition and of vitamin C concentration in milk. The mother''s intake of vitamin C influenced their plasma and milk concentrations. About 6% of the mothers had subnormal plasma concentrations without symptoms. The lowest concentrations occurred 2 mo. postpartum and during the spring. Thus, exclusively breast-fed infants are well protected against vitamin C deficiency, but marginal intake in lactating mothers is more common than assumed for a well-nourished population.