Prevalence and factors associated with hypovitaminosis D in adolescents from a sunny country: Findings from the ERICA survey

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Data
2020
Autores
Oliveira, Cecilia Lacroix de
Cureau, Felipe Vogt
Cople-Rodrigues, Claudia dos Santos
Giannini, Denise Tavares
Bloch, Katia Vergetti
Kuschnir, Maria Cristina Caetano
Carvalho, Kênia Mara Baiocchi de
Schaanb, Beatriz D.
Journal Title
Journal ISSN
Volume Title
Publisher
Journal of Steroid Biochemistry and Molecular Biology
Resumo
Vitamin D plays a role in bone and metabolic health in life long, however hypovitaminosis D is common in different settings. The aim of this study was to describe vitamin D status among adolescents from a large sunny country and analyze associated factors. This was a multicenter, cross-sectional, school-based study. A total of 1152 adolescents age 12–17 from four Brazilian cities, Rio de Janeiro, Fortaleza, Brasília, and Porto Alegre, were included. Anthropometric variables, diet, type of school, race and season of data collection were evaluated. Serum concentrations of 25-hydroxyvitamin D [25(OH)D] were measured and categorized into three levels: ≤ 20 ng/mL, 21–29 ng/mL and ≥ 30 ng/mL. Ordered logistic regression models were used to explore the factors associated with hypovitaminosis D. The prevalence of vitamin D levels below 20 ng/mL, between 21 and 29 ng/ mL and above 30 ng/mL was 21 % (95 %CI: 19 %–24 %), 42 % (95 %CI: 39 %–46 %) and 37 % (95 %CI: 33 %–40 %), respectively. In the final adjusted model, hypovitaminosis D was positively associated with gender, center (latitudes), data collected in winter or spring, non-whites, and private school students. A higher pro- portional odds ratio (POR) for hypovitaminosis D was found among obese boys (POR = 2.2, 95 %CI: 1.1–4.5), but not girls. Adequate dietary intake of vitamin D was a protective factor (POR = 0.4, 95 %CI: 0.2-0.6) against hypovitaminosis D. In conclusion, there is a high prevalence of Brazilian adolescents at risk of hypovitaminosis D, independent of region. Due to their potential benefits, lifestyle changes should be stimulated, including healthier food choices and spending more time outdoors (with sun protection).
Description
Palavras-chave
Adolescent, Vitamin D, Vitamin D deficiency, Obesity, Risk factors
Citação
Oliveira CL, Cureau FV, Cople-Rodrigues CDS, Giannini DT, Bloch KV, Kuschnir MCC, de Carvalho KMB, Schaan BD. Prevalence and factors associated with hypovitaminosis D in adolescents from a sunny country: Findings from the ERICA survey. J Steroid Biochem Mol Biol. 2020 May;199:105609. doi: 10.1016/j.jsbmb.2020.105609