Prevalence and risk factors for vitamin C deficiency in north and South India: a two centre population based study in people aged 60 years and over.
Ravindran, RD; Vashist, P; K Gupta, S; S Young, I; Maraini, G; Camparini, M; Jayanthi, R; John, N; Fitzpatrick, KE; Chakravarthy, U; Ravilla, TD; Fletcher, AE; (2011) Prevalence and risk factors for vitamin C deficiency in north and South India: a two centre population based study in people aged 60 years and over. PloS one, 6 (12). e28588. ISSN 1932-6203 DOI: 10.1371/journal.pone.0028588
|PDF - Published Version |
Available under License Creative Commons Attribution.
Download (102Kb) | Preview
BACKGROUND: Studies from the UK and North America have reported vitamin C deficiency in around 1 in 5 men and 1 in 9 women in low income groups. There are few data on vitamin C deficiency in resource poor countries. OBJECTIVES: To investigate the prevalence of vitamin C deficiency in India. DESIGN: We carried out a population-based cross-sectional survey in two areas of north and south India. Randomly sampled clusters were enumerated to identify people aged 60 and over. Participants (75% response rate) were interviewed for tobacco, alcohol, cooking fuel use, 24 hour diet recall and underwent anthropometry and blood collection. Vitamin C was measured using an enzyme-based assay in plasma stabilized with metaphosphoric acid. We categorised vitamin C status as deficient (<11 µmol/L), sub-optimal (11-28 µmol/L) and adequate (>28 µmol/L). We investigated factors associated with vitamin C deficiency using multivariable Poisson regression. RESULTS: The age, sex and season standardized prevalence of vitamin C deficiency was 73.9% (95% confidence Interval, CI 70.4,77.5) in 2668 people in north India and 45.7% (95% CI 42.5,48.9) in 2970 from south India. Only 10.8% in the north and 25.9% in the south met the criteria for adequate levels. Vitamin C deficiency varied by season, and was more prevalent in men, with increasing age, users of tobacco and biomass fuels, in those with anthropometric indicators of poor nutrition and with lower intakes of dietary vitamin C. CONCLUSIONS: In poor communities, such as in our study, consideration needs to be given to measures to improve the consumption of vitamin C rich foods and to discourage the use of tobacco.
|Faculty and Department:||Faculty of Infectious and Tropical Diseases > Dept of Clinical Research|
Faculty of Epidemiology and Population Health > Dept of Non-Communicable Disease Epidemiology
|Web of Science ID:||298173500037|
Item downloaded times since 11 Jul 2012 19:33.
Actions (login required)