Vitamin D deficiency and hyperparathyroidism in relation to ethnicity: a cross-sectional survey in healthy adults |
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Authors: | Rodrigo Moreno-Reyes Yvon A. Carpentier Marleen Boelaert Khadija El Moumni Ghislaine Dufourny Christine Bazelmans Alain Levêque Christine Gervy Serge Goldman |
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Affiliation: | 1.Dept. of Nuclear Medicine, H?pital Erasme,Université Libre de Bruxelles,Brussels,Belgium;2.Laboratory for Experimental Surgery L. Deloyers,Université Libre de Bruxelles,Brussels,Belgium;3.Epidemiology and Disease Control Unit,Institute of Tropical Medicine,Antwerpen,Belgium;4.Haute Ecole Lucia de Brouckère,Brussels,Belgium;5.Ecole de Santé Publique,Université Libre de Bruxelles,Brussels,Belgium;6.Dept. of Clinical Chemistry, H?pital Erasme,Université Libre de Bruxelles,Brussels,Belgium |
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Abstract: | Background The study of vitamin D status at population level gained relevance since vitamin D deficiency was recently suggested to trigger chronic disease. Aim of the study We aimed to describe vitamin D status, its association with bone and mineral metabolism and risk factors for deficiency in adults over 40 years in Belgium. Methods We conducted a cross-sectional survey in a stratified random sample of 401 subjects aged between 40 and 60 years living in Brussels, and drawn from 4 different ethnic backgrounds: autochthonous Belgian, Moroccan, Turkish and Congolese. 25-Hydroxyvitamin D (25OHD), parathyroid hormone (PTH), osteocalcin, C-telopeptide and bone mineral density was measured. Results Three-hundred and six subjects (77%) showed 25OHD concentrations below 50 nmol/l,135 (34%) below 25 nmol/l and 18 (5%) below 12.5 nmol/l. The proportion of subjects with vitamin D deficiency was four times greater amongst those of Moroccan or Turkish descent compared with those of Congolese or Belgian descent. Moroccan subjects showed a significant higher PTH and bone marker concentrations compared to Belgian. Ethnicity, season and sex were independently associated with vitamin D deficiency in multivariate analysis. Conclusion The prevalence of vitamin D deficiency is very high amongst the adult population of Brussels but immigrants are at greater risk. Given the established link between population health and adequate vitamin D status, a policy of vitamin D supplementation should be considered in these risk groups. |
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Keywords: | vitamin D ethnicity bone metabolism vitamin D deficiency hyperparathyroidism |
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