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J Nutr. 2017 Nov;147(11):2076-2082. doi: 10.3945/jn.117.254789. Epub 2017 Sep 20.

A 25-Hydroxycholecalciferol-Fortified Dairy Drink Is More Effective at Raising a Marker of Postprandial Vitamin D Status than Cholecalciferol in Men with Suboptimal Vitamin D Status.

Author information

1
Institute for Food, Nutrition and Health.
2
Hugh Sinclair Unit of Human Nutrition.
3
Institute for Cardiovascular and Metabolic Research, and.
4
Psychology, School of Psychology and Clinical Language Sciences, University of Reading, Reading, United Kingdom.
5
Institute for Food, Nutrition and Health, j.a.lovegrove@reading.ac.uk.

Abstract

Background: One strategy for improving population vitamin D status is consumption of fortified foods. However, the effects of dairy products fortified with different vitamin D isoforms on postprandial vitamin D status and metabolic outcomes have not been addressed.Objective: We investigated whether consumption of dairy drinks fortified with either 25-hydroxycholecalciferol [25(OH)D3] or cholecalciferol (vitamin D3) had differential effects on 24-h circulating plasma 25(OH)D3 concentration (a marker of vitamin D status) and cardiometabolic risk markers.Methods: A randomized, controlled, 3-way crossover, double-blind, postprandial study was conducted in 17 men with suboptimal vitamin D status [mean ± SEM age: 49 ± 3 y; body mass index (in kg/m2): 26.4 ± 0.6; and plasma 25(OH)D3 concentration: 31.7 ± 3.4 nmol/L]. They were randomly assigned to consume 3 different test meals (4.54 MJ, 51 g fat, 125 g carbohydrate, and 23 g protein), which contained either a nonfortified dairy drink (control), 20 μg 25(OH)D3-fortified (+HyD3) dairy drink, or 20 μg vitamin D3-fortified (+D3) dairy drink with toasted bread and jam on different occasions, separated by a 2-wk washout. Plasma 25(OH)D3 concentrations and cardiometabolic risk markers, including vascular stiffness, serum lipids, and inflammatory markers, were measured frequently within 8 h postprandially and 24 h after the dairy drink was consumed.Results: Plasma 25(OH)D3 concentrations (the primary outcome) were significantly higher after the +HyD3 dairy drink was consumed compared with +D3 and control (P = 0.019), which was reflected in the 1.5-fold and 1.8-fold greater incremental area under the curve for the 0-8 h response, respectively. The change in plasma 25(OH)D3 concentrations from baseline to 24 h for the +HyD3 dairy drink was also 0.9-fold higher than the +D3 dairy drink and 4.4-fold higher than the control (P < 0.0001), which were not significantly different from each other.Conclusion: The dairy drink fortified with 25(OH)D3 was more effective at raising plasma 25(OH)D3 concentrations postprandially than was the dairy drink fortified with vitamin D3 in men with suboptimal vitamin D status. This trial was registered at clinicaltrials.gov as NCT02535910.

KEYWORDS:

25(OH)D3; augmentation index; butter; dairy drink; milk; vascular function; vitamin D status; vitamin D3

PMID:
28931588
DOI:
10.3945/jn.117.254789
[Indexed for MEDLINE]

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