title: Predictors of 25-hydroxyvitamin D status among adults in two British national surveys.
abstract: Several recent reports have found a high prevalence of vitamin D deficiency in the adult British population. The present paper investigates the associations of low income/material deprivation and other predictors of serum 25-hydroxyvitamin D (25(OH)D) status in two surveys: The National Diet and Nutrition Survey (NDNS) of the population aged 19-64 years in mainland Britain and the Low Income Diet and Nutrition Survey (LIDNS) of adults aged > or = 19 years in all regions of the UK who were screened to identify low-income/materially deprived households. A valid serum 25(OH)D sample was obtained in 1297 and 792 participants from the NDNS and LDNS respectively. The NDNS participants who were not receiving benefits (n 1054) had a mean 25(OH)D of 50.1 nmol/l, which was higher than among NDNS participants receiving benefits (n 243) with a mean 25(OH)D of 43.0 nmol/l (P < 0.001) and the LIDNS sample (46.5 nmol/l; P < 0.05). For all three samples, the season of drawing blood, skin colour, dietary intake of vitamin D, and intake of dietary supplements were significant predictors (P < 0.05) of serum 25(OH)D status in mutually adjusted regression models. National prevention and treatments strategies of poor vitamin D status need to be targeted to include the adult population, particularly deprived populations, in addition to the elderly and ethnic minorities.
authors.affiliation: Department of Epidemiology and Public Health, Royal Free and University College London Medical School, University College London, 1-19 Torrington Place, London, UK.
authors.forename: Vasant
authors.initials: V
authors.lastname: Hirani
authors.forename: Annhild
authors.initials: A
authors.lastname: Mosdøl
authors.forename: Gita
authors.initials: G
authors.lastname: Mishra
mesh_terms: D000328:Adult; D000886:Anthropometry / Q000379:methods; D019587:Dietary Supplements; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009749:Nutrition Surveys; D011203:Poverty / Q000706:statistics & numerical data; D012307:Risk Factors; D012621:Seasons; D012880:Skin Pigmentation; D006113:United Kingdom / Q000453:epidemiology; D014807:Vitamin D / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000097:blood; D014808:Vitamin D Deficiency / Q000097:blood / Q000453:epidemiology / Q000209:etiology*; D055815:Young Adult
chemical_list: D014807:Vitamin D; C104450:25-hydroxyvitamin D