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Updated: May 11, 2026

A Method of Trigonometric Modelling of Seasonal Variation Demonstrated with Multiple Sclerosis Relapse Data
Published on: December 9, 2015
[Ethnicity and vitamin D]
Philippe Chauveau1, Michel Aparicio
1Service de néphrologie, hôpital Pellegrin, CHU de Bordeaux, place Amélie-Raba-Léon, 33000 Bordeaux, France; Aurad-Aquitaine, 2, allée des Demoiselles, 33170 Gradignan, France.
Abstract:
Cohort studies, mainly US, show that vitamin D deficiency is more common in African-American population. Social and environmental factors play a role but the difference in skin color is essential. Despite low 25-hydroxyvitamin D concentrations, a lower risk of fragility or fracture exists in these populations. Vitamin D deficiency is a contributing factor in many chronic diseases. There is a relationship between vitamin D deficiencies, progression of chronic kidney disease and increased relative risk of mortality. If the ethnicity of patients is now taken into account to estimate renal function, probably specific recommendations for vitamin D deficiency are needed.
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