Cent Eur J Public Health 2018, 26(4):260-264 | DOI: 10.21101/cejph.a5386

Assessment of vitamin D status in Czech children

Lenka Sochorová1, Lenka Hanzlíková1, Milena Černá1,3, Michala Vosátková2, Anna Pinkr Grafnetterová1, Alena Fialová1,3, Růžena Kubínová1
1 National Institute of Public Health, Prague, Czech Republic
2 Institute of Endocrinology, Prague, Czech Republic
3 Third Faculty of Medicine, Charles University, Prague, Czech Republic

Objective: Vitamin D deficiency is a global health problem. The aim of this study was to determine the proportion of Czech children with vitamin D deficiency and examine related factors.

Methods: The study subjects were 419 healthy children aged 5 and 9 years. Severe vitamin D deficiency was defined as a serum 25(OH)D level of < 25 nmol/L (3% of children), deficiency as that of 25-50 nmol/L (24% of children), insufficiency as that of 50-75 nmol/L (40% of children) and sufficiency as that of > 75 nmol/L (34% of children).

Results: Serum 25(OH)D levels varied mainly with season. The highest levels of 25(OH)D were reached in autumn (median: 79.0 nmol/L), followed by summer (median: 67.8 nmol/L) and winter (median: 56.0 nmol/L). The lowest median value (49.8 nmol/L) was detected in spring.

Conclusion: Children with sufficiency 25(OH)D levels were more frequently exposed to the sun and exposed a larger part of their body to the sun while spending time outdoors. Levels of 25(OH)D were also associated with using vitamin D supplements within six weeks before sampling.

Keywords: vitamin D, 25(OH)D levels, human biomonitoring, children, Czech Republic

Received: May 21, 2018; Revised: October 29, 2018; Published: December 31, 2018  Show citation

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Sochorová L, Hanzlíková L, Černá M, Vosátková M, Grafnetterová AP, Fialová A, Kubínová R. Assessment of vitamin D status in Czech children. Cent Eur J Public Health. 2018;26(4):260-264. doi: 10.21101/cejph.a5386. PubMed PMID: 30660135.
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