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Vitamin D supplement use and associated demographic, dietary and lifestyle factors in 8024 South Asians aged 40–69 years: analysis of the UK Biobank cohort

  • Andrea L Darling (a1), David J Blackbourn (a1), Kourosh R Ahmadi (a1) and Susan A Lanham-New (a1)

Abstract

Objective

Vitamin D deficiency (serum 25-hydroxyvitamin D<25 nmol/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, 8024 South Asians (Bangladeshi, Indian, Pakistani), aged 40–69 years.

Results

Twenty-three per cent 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 µg/d, 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 (OR=2·02; 95 % CI 1·79, 2·28). A lower supplement usage was seen in younger persons (40–60 years v. >60 years: OR=0·75; 95 % CI 0·65, 0·86) and in those living outside Greater London (OR=0·53 to 0·77), with borderline trends for a lower BMI, 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 subgroups.

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Copyright

Corresponding author

*Corresponding author: Email a.l.darling@surrey.ac.uk

References

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Vitamin D supplement use and associated demographic, dietary and lifestyle factors in 8024 South Asians aged 40–69 years: analysis of the UK Biobank cohort

  • Andrea L Darling (a1), David J Blackbourn (a1), Kourosh R Ahmadi (a1) and Susan A Lanham-New (a1)

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