Journal
IRISH JOURNAL OF MEDICAL SCIENCE
Volume 177, Issue 2, Pages 131-134Publisher
SPRINGER LONDON LTD
DOI: 10.1007/s11845-008-0129-z
Keywords
25-hydroxyvitamin D; healthy adults; seasonality; vitamin D insufficiency
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Background Specific sub-groups of the population, such as older people, are at increased risk of poor vitamin D status. There is growing evidence, however, that vitamin D insufficiency may be a more widespread problem. Aim To determine the prevalence of vitamin D insufficiency in a group of healthy Irish adults. Methods Serum 25-hydroxyvitamin D was measured by radioimmunoassay in 70 healthy Irish adults working in South Dublin. Results Overall, half of the group (51%) had vitamin D insufficiency; this was more pronounced in wintertime, with prevalence rising to 58%. Winter was a significant negative predictor of serum 25-OH D levels. Sixteen percent of the participants reported taking a vitamin D-containing supplement (multivitamin), but this did not significantly influence the serum 25-OH D levels. Conclusion Vitamin D insufficiency is not confined to at-risk groups and is likely to be prevalent in the general public in Ireland, especially in wintertime.
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