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Objective:

Studies determining the relationship between serum vitamin D status and childhood asthma have yielded controversial results. Findings indicated that vitamin D deficiency is associated with asthma and airway hyper responsiveness. The aim of this study was to assess the relationship between serum vitamin D status and childhood asthma.

Methods:

Data were obtained from 200 asthmatic children (age 3–12 years) and 200 healthy controls. Serum levels of 25 (OH) vitamin D, total IgE, calcium, phosphorus, parathormone (PTH) and eosinophil count were measured in both asthmatic children and healthy controls. Also, the mean values of 25 (OH) vitamin D were compared with asthma symptom severities.

Findings:

There was a significant decrease in the concentration of serum 25 (OH) vitamin D in the asthmatic patients as compared with the controls (20.34±2.8 vs 25.39±4.1 ng/mL, 95% CI: 1.46–3.86, P= 0 …