Abstract
Background
Micronutrient intake and status in lactating women may impact micronutrient levels in milk.
Objectives
This study aimed to determine the micronutrient intake and status in lactating women, and their association with micronutrient levels in human milk.
Methods
Lactating women were enrolled at 4–6 months postpartum. A 24h food recall was examined and nutrient intakes were analyzed using INMUCAL software. Human milk samples were collected to analyze calcium, copper, iron, and zinc levels. Plasma zinc and serum ferritin levels were determined.
Results
Thirty-four women participated; 19 were classified as full breastfeeding and 15 as partial breastfeeding. Mean levels of calcium, copper, iron, and zinc in human milk were 243, 0.2, 0.2, and 1.56 mg/L, respectively. The prevalence of zinc deficiency (plasma zinc < 10.7 µmol/L) was 11.8%. No lactating women had iron deficiency. Nutrient intakes were lower than the recommended amounts in 38%–70% of participants, and were not correlated with corresponding nutrient levels in human milk. Multiple linear regression showed significant association between zinc levels in human milk and plasma for lactating women with full breastfeeding (β = 0.034, 95% confidence interval [0.003, 0.067], p = 0.040).
Conclusions
Lactating women were at risk of micronutrient deficiency. There was an association between zinc levels in human milk and plasma of lactating women with full breastfeeding. As the nutritional status of lactating women influences the quality of human milk, we should encourage good nutrient intake for lactating women.
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Acknowledgements
We acknowledge staff at the Well Child Clinic, Faculty of Medicine Ramathibodi Hospital, and express our sincere thanks to all women and their families for participating in our study. This study was financially supported by the Development potential of Thai people project, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Thailand.
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Dumrongwongsiri, O., Chongviriyaphan, N., Chatvutinun, S. et al. Dietary Intake and Milk Micronutrient Levels in Lactating Women with Full and Partial Breastfeeding. Matern Child Health J 25, 991–997 (2021). https://doi.org/10.1007/s10995-020-03049-4
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DOI: https://doi.org/10.1007/s10995-020-03049-4