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Vitamin D-fortified milk achieves the targeted serum 25-hydroxyvitamin D concentration without affecting that of parathyroid hormone in New Zealand toddlers
Umeå University, Faculty of Medicine, Department of Clinical Sciences, Paediatrics.
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2011 (English)In: Journal of Nutrition, ISSN 0022-3166, E-ISSN 1541-6100, Vol. 141, no 10, 1840-1846 p.Article in journal (Refereed) Published
Abstract [en]

For young children, the level of vitamin D required to ensure that most achieve targeted serum 25-hydroxyvitamin D [25(OH)D] >= 50 nmol/L has not been studied. We aimed to investigate the effect of vitamin D-fortified milk on serum 25(OH)D and parathyroid hormone (PTH) concentrations and to examine the dose response relationship between vitamin D intake from study milks and serum 25(OH)D concentrations in healthy toddlers aged 12-20 mo living in Dunedin, New Zealand (latitude 46 S). Data from a 20-wk, partially blinded, randomized trial that investigated the effect of providing red meat or fortified toddler milk on the iron, zinc, iodine, and vitamin D status in young New Zealand children (n = 181; mean age 17 mo) were used. Adherence to the intervention was assessed by 7-d weighed diaries at wk 2, 7, 11, 15, and 19. Serum 25(OH)D concentration was measured at baseline and wk 20. Mean vitamin D intake provided by fortified milk was 3.7 mu g/d (range, 0-10.4 mu g/d). After 20 wk, serum 25(OH)D concentrations but not PTH were significantly different in the milk groups. The prevalence of having a serum 25(OH)D <50 nmol/L remained relatively unchanged at 43% in the meat group, whereas it significantly decreased to between 11 and 15% in those consuming fortified study milk. In New Zealand, vitamin D intake in young children is minimal. Our findings indicate that habitual consumption of vitamin D-fortified milk providing a mean intake of nearly 4 mu g/d was effective in achieving adequate year-round serum 25(OH)D for most children.

Place, publisher, year, edition, pages
Bethesda, Md., 2011. Vol. 141, no 10, 1840-1846 p.
National Category
Nutrition and Dietetics
URN: urn:nbn:se:umu:diva-48292DOI: 10.3945/jn.111.145052ISI: 000295193000012OAI: diva2:448681
Available from: 2011-10-17 Created: 2011-10-14 Last updated: 2011-10-20Bibliographically approved

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