Prevalence of Vitamin D Deficiency according to Climate Conditions among a Nationally Representative Sample of Iranian Adolescents: the CASPIAN-III Study
Background: Sunlight is the main source of vitamin D; therefore, environmental factors might have an important role in the high prevalence of hypovitaminosis D in children. This study aimed to assess the vitamin D status according to the climate of the living area in a nationally representative samp...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Mashhad University of Medical Sciences
2016-06-01
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| Series: | International Journal of Pediatrics |
| Subjects: | |
| Online Access: | http://ijp.mums.ac.ir/article_6756_51c6f2b88de1115621e108813f05e212.pdf |
| Summary: | Background: Sunlight is the main source of vitamin D; therefore, environmental factors might have an important role in the high prevalence of hypovitaminosis D in children. This study aimed to assess the vitamin D status according to the climate of the living area in a nationally representative sample of Iranian adolescents. Material and Methods: This nationwide cross-sectional survey was performed among a representative sample of 1,095adolescents aged 10-18 years, selected by multistage cluster sampling method from 27 provinces of Iran. Serum 25-hydroxyvitamin D [25(OH) D] concentrations was compared in inhabitants of humid-rainy, cold-mountainous, and sunny regions. Results: Vitamin D deficiency was documented in 40% of participants including 40.70% of boys and 39.30% of girls. We found significant difference in 25(OH) D concentrations among participants living in the three different climates of the living area (P |
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| ISSN: | 2345-5047 2345-5055 |