Weekday sunlight exposure, but not vitamin D intake, influences the association between vitamin D receptor genotype and circulating concentration 25-hydroxyvitamin D in a pan-European population: the Food4Me study

Livingstone, K. M., Celis-Morales, C., Hoeller, U., Lambrinou, C. P., Moschonis, G., Macready, A. L. ORCID: https://orcid.org/0000-0003-0368-9336, Fallaize, R., Baur, M., Roos, F. F., Bendik, I., Grimaldi, K., Navas-Carretero, S., San-Cristobal, R., Weber, P., Drevon, C. A., Manios, Y., Traczyk, I., Gibney, E. R., Lovegrove, J. A. ORCID: https://orcid.org/0000-0001-7633-9455, Saris, W. H., Daniel, H., Gibney, M., Martinez, J. A., Brennan, L., Hill, T. R. and Mathers, J. C. (2017) Weekday sunlight exposure, but not vitamin D intake, influences the association between vitamin D receptor genotype and circulating concentration 25-hydroxyvitamin D in a pan-European population: the Food4Me study. Molecular Nutrition & Food Research, 61 (2). 1600476. ISSN 1613-4133 doi: 10.1002/mnfr.201600476

Abstract/Summary

Scope Little is known about diet- and environment-gene interactions on 25-hydroxyvitamin D (25(OH)D concentration. This cross-sectional study aimed to investigate i) predictors of 25(OH)D concentration and relationships with vitamin D genotypes and ii) whether dietary vitamin D intake and sunlight exposure modified these relationships. Methods and results Participants from the Food4Me study (n = 1312; age 18–79) were genotyped for vitamin D receptor (VDR) and vitamin D binding protein at baseline and a genetic risk score was calculated. Dried blood spot samples were assayed for 25(OH)D concentration and dietary and lifestyle information collected. Circulating 25(OH)D concentration was lower with increasing genetic risk score, lower in females than males, higher in supplement users than non-users and higher in summer than winter. Carriage of the minor VDR allele was associated with lower 25(OH)D concentration in participants with the least sunlight exposure. Vitamin D genotype did not influence the relationship between vitamin D intake and 25(OH)D concentration. Conclusion Age, sex, dietary vitamin D intake, country, sunlight exposure, season and vitamin D genetic risk score were associated with circulating 25(OH)D concentration in a pan-European population. The relationship between VDR genotype and 25(OH)D concentration may be influenced by weekday sunlight exposure but not dietary vitamin D intake.

Item Type	Article
URI	https://reading-clone.eprints-hosting.org/id/eprint/67359
Identification Number/DOI	10.1002/mnfr.201600476
Refereed	Yes
Divisions	Life Sciences > School of Chemistry, Food and Pharmacy > Department of Food and Nutritional Sciences > Human Nutrition Research Group
Publisher	Wiley
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