Assessment of vitamin D status in Czech children

Area of Science:

• Pediatric Endocrinology
• Nutritional Science
• Public Health

Background:

• Vitamin D deficiency is a significant global health concern.
• Understanding prevalence in specific populations is crucial for targeted interventions.

Purpose of the Study:

• To determine the prevalence of vitamin D deficiency in Czech children.
• To identify factors associated with vitamin D status in this cohort.

Main Methods:

• A cross-sectional study involving 419 healthy children aged 5 and 9 years.
• Serum 25-hydroxyvitamin D [25(OH)D] levels were measured.
• Deficiency defined as < 50 nmol/L, insufficiency as 50-75 nmol/L, and sufficiency as > 75 nmol/L.

Main Results:

• Seasonal variation significantly impacted vitamin D levels, with the highest levels in autumn and lowest in spring.
• 3% of children had severe deficiency (< 25 nmol/L), and 24% had deficiency (25-50 nmol/L).
• Higher vitamin D levels correlated with increased sun exposure and vitamin D supplement use.

Conclusions:

• Sun exposure and supplement use are key factors for maintaining adequate vitamin D levels in children.
• Findings highlight the need for public health strategies addressing vitamin D insufficiency in pediatric populations.
• Seasonal monitoring and targeted supplementation may be beneficial for Czech children.