Objective. To study vitamin D status in children with inflammatory bowel diseases (IBD) depending on the diagnosis, gender, age and a season of examination. Patients and methods. The study included 244 children (130 boys and 114 girls) aged 3 to 18 years. The patients were divided into 2 groups depending on the nosological form of disease: Crohn’s disease (CD) – 130 children, ulcerative colitis (UC) – 114 children. Blood vitamin D levels were determined by the method of competitive electrochemiluminescence. Results. Normal levels of vitamin D (>30 ng/ml) were found only in 11.1% of children with IBD (in 11.5% with CD and 10.5% with UC). Vitamin D status corresponded to deficiency levels in 65.9% of cases, of them 15.2% had deep deficiency (<10 ng/ml). Vitamin D status decreased with increasing age of the patients (ρ = -0.2686). No statistically significant differences were found in vitamin D levels that would be dependent on the season of examination, neither were they found in groups of patients with CD and UC. Conclusion. The study showed an extremely low vitamin D status in patients with IBD. The problem of assessing vitamin D levels in children with IBD and its monitoring as well as development of individual algorithms for supplementation remains topical. Key words: vitamin D, inflammatory bowel disease, Crohn’s disease, ulcerative colitis, children
A Prospective Study of Vitamin D Status and Risk of Incident Crohn's Disease and Ulcerative Colitis