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Vitamin D status and health correlates among apparently healthy participants in an urban, sunny region

N. Vallianou, V. Bountziouka, T. Akalestos, A. Evangelopoulos, E. Vogiatzakis, M. Bonou, J. Barbetseas, PC. Avgerinos, DB. Panagiotakos

. 2012 ; 20 (4) : 262-269.

Language English Country Czech Republic

Document type Journal Article, Research Support, Non-U.S. Gov't

Digital library NLK
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E-resources Online Full text

NLK Free Medical Journals from 2004
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AIM: To assess vitamin D status and health correlates in a sample of apparently healthy Caucasian participants residing in an urban area, Athens, with latitude 370 58' 0" N and longitude 230 43' 0" E, after taking into consideration a broad range of purported biological, behavioural and environmental factors. METHOD: Men and women 35+ years from a selected population (n = 490) were studied. Participants completed a detailed questionnaire regarding socio-demographic, lifestyle, clinical and dietary characteristics. Biomarkers were measured after 12 h fasting. Linear and multinomial regression models were used to evaluate the association between 25(OH)D and determinants of vitamin D status. RESULTS: Results revealed that one hour increase of sunlight exposure decreased the odds of having D deficiency (i.e., < 20 ng/mL) by 70% (OR = 0.30, 95% Cl: 0.20-0.45), adjusted for age, sex, family status, physical activity, smoking habits, BMI, triglycerides, parathyroid hormone, uric acid, haptoglobin, folate acid and haemoglobin, as compared to sufficient levels (i.e., >30 ng/mL). Regarding biomarkers, parathyroid hormone and haptoglobin were found to be related with the odds of having vitamin D deficiency (OR = 1.11, 95% CI: 1.05-1.16; OR = 1.02, 95% CI: 1.00-1.03, respectively) as compared to the sufficient levels. CONCLUSIONS: Sufficient serum vitamin D levels were observed among participants with characteristics associated with reduced cardiovascular risk, such as normal BMI, increased physical activity, decreased parathyroid hormone and decreased inflammatory markers. Even a slight increase in sunlight exposure could have beneficial effects on serum vitamin D concentrations and eventually on haemoglobin and inflammatory markers levels, thus providing a simple and inexpensive lifestyle intervention that promotes public health.

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