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Vitamin D supplement use and associated demographic, dietary and lifestyle factors in South Asians (n 8024) aged 40-69 years: analysis of the UK Biobank Cohort

Darling, Andrea L., Blackbourn, David J., Ahmadi, Kourosh R. and Lanham-New, Susan A. (2018) Vitamin D supplement use and associated demographic, dietary and lifestyle factors in South Asians (n 8024) aged 40-69 years: analysis of the UK Biobank Cohort Public Health Nutrition, 21 (14). pp. 2678-2688.

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Abstract

Objective: Vitamin D deficiency (serum 25-hydroxyvitamin D˂25nmol/L) is extremely common in western-dwelling South Asians but evidence regarding vitamin D supplement usage in this group is very limited. This work identifies demographic, dietary and lifestyle predictors associated with vitamin D supplement use.

Design: Cross-sectional analysis of baseline vitamin D supplement use data.

Setting: UK Biobank cohort.

Subjects: In total, n 8024 South Asians (Bangladeshi, Indian, Pakistani), aged 40-69 years.

Results: Twenty-three % of men and 39% of women (P˂0.001) [22% of Bangladeshis, 32% of Indians, 25% of Pakistanis (P˂0.001)] took a vitamin D containing supplement. Median vitamin D intakes from diet were low at 1.0-3.0 micrograms per day, being highest in Bangladeshis and lowest in Indians (P˂0.001). Logistic regression modelling showed that females had a higher odds of vitamin D supplement use than males (odds ratio (OR) = 2.02; 95% confidence interval (CI) 1.79 to 2.28). A lower supplement usage was seen in younger persons (40-60 years) (OR=0.75; 95% CI 0.65 to 0.86 reference= ˃60 years), and those living outside of Greater London (OR=0.53 to 0.77), with borderline trends for a lower body mass index, higher oily fish intake and higher household income associated with increased odds of vitamin D supplement use.

Conclusions: Vitamin D supplements were not used by most South Asians and intakes from diet alone are likely to be insufficient to maintain adequate vitamin D status. Public health strategies are now urgently required to promote the use of vitamin D supplements in these specific UK South Asian sub-groups.

Item Type: Article
Divisions : Faculty of Health and Medical Sciences > School of Biosciences and Medicine
Authors :
NameEmailORCID
Darling, Andrea L.A.L.Darling@surrey.ac.uk
Blackbourn, David J.d.blackbourn@surrey.ac.uk
Ahmadi, Kourosh R.k.ahmadi@surrey.ac.uk
Lanham-New, Susan A.S.Lanham-New@surrey.ac.uk
Date : 25 June 2018
Funders : Biotechnology and Biological Sciences Research Council (BBSRC)
DOI : 10.1017/S1368980018001404
Copyright Disclaimer : © The Authors 2018. Published by Cambridge University Press.
Uncontrolled Keywords : South Asian; UK Biobank; Cohort; Vitamin D; Supplement; Ethnicity
Depositing User : Clive Harris
Date Deposited : 03 Jul 2018 07:32
Last Modified : 11 Dec 2018 11:24
URI: http://epubs.surrey.ac.uk/id/eprint/846337

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