Assessment of the Relation Between Asthma Severity and Serum Vitamin D Levels: A Cross-Sectional Study

Area of Science:

• Pediatric Pulmonology
• Nutritional Biochemistry
• Clinical Immunology

Background:

• Vitamin D3 is crucial for bone health and increasingly researched for roles beyond musculocutaneous health.
• Vitamin D deficiency is a global health concern, particularly in pediatric populations.
• Emerging evidence suggests a potential link between vitamin D status and respiratory health, including asthma.

Purpose of the Study:

• To assess the prevalence of vitamin D3 deficiency in children with asthma.
• To compare vitamin D3 levels between asthmatic children and healthy controls.
• To investigate the correlation between vitamin D3 levels and asthma control, severity, and exacerbations.

Main Methods:

• A cross-sectional study involving 50 asthmatic children (5-15 years) and 50 age-matched healthy controls in Punjab, India.
• Demographic details and clinical examinations were conducted for all participants.
• Serum 25-(OH) vitamin D levels were measured and compared between groups, with analysis of its relationship to asthma control and severity.

Main Results:

• Asthmatic children exhibited significantly lower serum vitamin D3 levels (24.62 ± 14.95 ng/ml) compared to healthy controls (32.08 ± 12.22 ng/ml).
• Children with uncontrolled asthma had markedly lower vitamin D3 levels (12.06 ± 4.68 ng/ml) than those with well-controlled asthma (44.82 ± 10.48 ng/ml).
• A significant correlation was observed between lower vitamin D3 levels and increased asthma severity, poorer control, and a higher number of acute exacerbations.

Conclusions:

• Low serum vitamin D3 levels are more prevalent in children with asthma compared to healthy children.
• Vitamin D3 levels are significantly associated with asthma control, severity, and the frequency of acute exacerbations in pediatric patients.
• These findings suggest a potential role for vitamin D3 supplementation in the management of childhood asthma.