Document Detail


Dietary strategies to maintain adequacy of circulating 25-Hydroxyvitamin D concentrations.
MedLine Citation:
PMID:  22536758     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Abstract The importance of vitamin D intake to nutritional status is a corollary of sunshine deficit. There is a dose-response of serum 25-hydroxyvitamin D (25(OH)D) concentrations to total vitamin D intake in persons who do not receive UVB exposure. This updated summary of vitamin D intakes and sources in adults and children focuses on data from North America and Europe. We explore the evidence that intakes of vitamin D are inadequate with reference to the Institute of Medicine (IOM) Dietary Reference Intakes. Due to mandatory fortification, usual vitamin D intakes are higher in the US and Canada than most of Europe, with the exception of the Nordic countries. Intakes of vitamin D in national surveys are typically below 5 μg/d in most European countries and vary according to country-specific fortification practices, sex and age. The main source of variation is the contribution from nutritional supplements. Usual vitamin D intake estimates need to capture data on the contributions from fortified and supplemental sources as well as the base diet. The current dietary supply of vitamin D makes it unfeasible for most adults to meet the IOM Estimated Average Requirement of 10 μg/d. While supplements are an effective method for individuals to increase their intake, food fortification represents the best opportunity to increase the vitamin D supply to the population. Well-designed sustainable fortification strategies, which use a range of foods to accommodate diversity, have potential to increase vitamin D intakes across the population distribution and minimize the prevalence of low 25(OH)D concentrations.
Authors:
Mairead Kiely; Lucinda J Black
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Scandinavian journal of clinical and laboratory investigation. Supplementum     Volume:  243     ISSN:  0085-591X     ISO Abbreviation:  Scand. J. Clin. Lab. Invest. Suppl.     Publication Date:  2012  
Date Detail:
Created Date:  2012-04-27     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2984789R     Medline TA:  Scand J Clin Lab Invest Suppl     Country:  England    
Other Details:
Languages:  eng     Pagination:  14-23     Citation Subset:  IM    
Affiliation:
Vitamin D Research Group, School of Food and Nutritional Sciences , University College Cork , Ireland.
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