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Breast milk levels of zinc and omega-6 polyunsaturated fatty acids and growth of healthy Chinese infants

Breast milk levels of zinc and omega-6 polyunsaturated fatty acids and growth of healthy Chinese infants

Xiang, Mingyan, Harbige, Laurence S. and Zetterström, Rolf (2007) Breast milk levels of zinc and omega-6 polyunsaturated fatty acids and growth of healthy Chinese infants. Acta Paediatrica, 96 (3). pp. 387-390. ISSN 0803-5253 (doi:10.1111/j.1651-2227.2006.00140.x)

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Abstract

AIM: To examine the concentrations of zinc and omega-6 polyunsaturated fatty acids (omega-6 PUFAs) in breast milk, the impact of zinc on omega-6 PUFA metabolism, and the growth rate of infants. METHODS: Forty-one mother-term infant pairs from a rural area of northern Beijing, China, who were 1 month (n = 18, group I) and 3 months (n = 23, group II) old and exclusively breastfed, were studied. The dietary records and the concentrations of zinc and omega-6 PUFAs in the milk of lactating women and the increase in weight and length of their infants during 1 and 3 postnatal months were analysed. RESULTS: The dietary intakes of mothers in the two groups were the same, i.e. high in carbohydrate and low in fat, protein and energy. The maternal zinc intake was 7.5mg/d and thus reached only 34.6% of the current Recommended Nutrient Intake (RNI). The levels of zinc and arachidonic acid (AA, C20:4 omega-6) in the milk of group I were significantly higher than those in group II. Furthermore, significant positive correlations were found between the concentrations of zinc and AA in the breast milk and between the level of milk AA and weight gain. CONCLUSION: Zinc may be a co-factor and essential for essential fatty acids (EFA) metabolism. Thus suboptimal zinc intake may cause EFA imbalance. Further studies of Chinese rural mother-infant pairs are necessary to determine whether zinc supplementation should be recommended when lactation exceeds 3 months.

Item Type: Article
Uncontrolled Keywords: arachidonic acid, breast milk, Chinese infants, growth, omega-6 polyunsaturated fatty acids, zinc
Subjects: R Medicine > RJ Pediatrics
Faculty / Department / Research Group: Faculty of Engineering & Science > Department of Life & Sports Sciences
Related URLs:
Last Modified: 05 Dec 2016 16:58
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/2692

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