ArticleJornal de pediatria
Alert for the high prevalence of vitamin D deficiency in adolescents in a large Brazilian sample.
Article in Jornal de pediatria. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 8 citations in OpenAlex.
- Sleep Duration and Sun Exposure in Portuguese Children: Associations With Obesity Indicators.American journal of human biology : the official journal of the Human Biology Council · 2026Article
- Analysis of chemiluminescence and liquid chromatography-mass spectrometry in 25-hydroxyvitamin D detection using fuzzy logic.Scientific reports · 2026Article
- Associations Between Serum 25(OH)D Concentrations and Clinical Characteristics in Pediatric Patients.Reports (MDPI) · 2026Article
- Association between vitamin D status and insulin resistance in Korean adolescents: differential effects of obesity using non-insulin-based indices.BMC pediatrics · 2026Article
- Vitamin D status in children.Jornal de pediatriaArticle
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Authors and funding
10 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo estimate the prevalence of vitamin D deficiency and severe deficiency in children and adolescents, in a large Brazilian sample. METHODOLOGY: Results of 413,988 25(OH)D measurements in children and adolescents aged 0 to 18 years collected between 01/2014 and 10/2018 were obtained from the database of a Clinical Laboratory. In this population, 25 hydroxyvitamin D concentrations below 20 ng/mL are considered deficient, and below 12 ng/mL as severe deficiency. All measurements were performed by immunoassay and the results were distributed by gender, age group, seasonality, and latitude.
resultsThe mean of 25(OH)D levels was 29.2 ng/mL with a standard deviation of 9.2 ng/mL. Of the total samples, 0.8% had a concentration < 12 ng/mL, and 12.5% of the samples had a concentration < 20 ng/mL, with a higher prevalence in females. Children under 2 years of age had the lowest prevalence. The effects of latitude and seasonality were quite evident. In samples of female adolescents from the southern region in winter, 36% of vitamin D deficiency and 5% of severe deficiency were found.
conclusionIn this large number of measurements of 25(OH)D in children and adolescents, 12.5% had a deficiency and 0.8% had severe deficiency. A greater deficiency was observed among adolescents, especially females, which raises questions about the need for supplementation during this period of life.
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