ArticleAnnals of nutrition & metabolism2025
Seasonal Differences of 25-Hydroxyvitamin D Concentrations in Children and Adolescents from Mexico City and Metropolitan Area.
Article in Annals of nutrition & metabolism, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
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5 authors.
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Abstract
introductionVitamin D deficiency is associated with bone metabolism and immune disorders. Radiation's seasonal variation affects vitamin D status more at the poles. In Mexico, near the equator, there have been reports of 10-20% vitamin D deficiency in children. There is no consensus on the definition of vitamin D deficiency, different organizations consider that a vitamin D level should be above 20-30 ng/mL. This study aimed to analyze vitamin D serum concentrations in children and adolescents from Mexico City and the Metropolitan Area (MA) during different seasons.
methodsCross-sectional study in children and adolescents aged 5-20 years from Mexico City and Metropolitan Area, from autumn 2016 to winter 2017. Variables of interest such as anthropometric measurements, food consumption, and physical activity were analyzed.
resultsA total of 816 children and adolescents were included. A high frequency of vitamin D deficiency was detected in 40.7% of the sample. The lowest vitamin D status occurred in winter 2016 and winter 2017.
conclusionWe found a higher frequency of vitamin D deficiency during winter in children and adolescents in Mexico City and MA. This risk persisted after adjusting for age, sex, body mass index Z-score, milk consumption, physical activity, and screen time.
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