Vitamin D Applications in Asthma Management

Vitamin D has emerged as a multifaceted agent in the prevention and management of asthma, exerting effects on immune regulation, airway structure and inflammatory pathways. Its principal circulating form, 25-hydroxyvitamin D, modulates the balance between pro-inflammatory and anti-inflammatory responses by influencing T-helper cell differentiation and cytokine production. In asthma, vitamin D sufficiency appears to attenuate airway hyperresponsiveness, reduce eosinophilic infiltration and inhibit remodelling of the bronchial wall. Experimental models demonstrate that calcitriol, the hormonally active metabolite, dampens transforming growth factor-β-induced epithelial-mesenchymal transition and fibrotic changes, while clinical studies link optimal serum levels with fewer exacerbations and improved lung function. Genetic variation in the vitamin D receptor and vitamin D–binding protein may further modify individual responses to supplementation. Taken together, these findings suggest that targeted vitamin D intervention—whether through dietary intake, controlled sun exposure or supplementation—can form part of a personalised strategy to complement inhaled corticosteroids and bronchodilators, reduce corticosteroid resistance and ultimately improve asthma control across diverse patient populations.

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Vitamin D Applications in Asthma Management publication trend

The graph below shows the total number of articles in vitamin d applications in asthma management across all publications each year (not limited to Nature Index journals).

Technical terms

25-hydroxyvitamin D (25(OH)D): The main circulating form of vitamin D, used to assess vitamin D status.

Airway remodelling: Structural changes in the bronchial wall, including fibrosis, smooth muscle hypertrophy and extracellular matrix deposition, which contribute to chronic airflow obstruction.

Th2 cytokines: A subset of immune signalling molecules (such as interleukin-4 and interleukin-5) that promote eosinophilic inflammation characteristic of atopic asthma.

Eosinophils: White blood cells involved in allergic inflammation and airway hyperreactivity; elevated levels are a marker of Th2-driven asthma.

References

1. Vitamin D and allergic diseases. Frontiers in Immunology (2024).
2. Vitamin D status, sleep patterns, genetic susceptibility, and the risk of incident adult-onset asthma: a large prospective cohort study. Frontiers in Nutrition (2023).
3. Associations between vitamin D status and biomarkers linked with inflammation in patients with asthma: a systematic review and meta-analysis of interventional and observational studies. Respiratory Research (2024).
4. The Role of Vitamin D Supplementation on Airway Remodeling in Asthma: A Systematic Review. Nutrients (2023).
5. The Association of Vitamin D Receptor Gene Polymorphisms with Vitamin D, Total IgE, and Blood Eosinophils in Patients with Atopy. Biomolecules (2024).
6. Vitamin D regulating TGF-β induced epithelial-mesenchymal transition. Respiratory Research (2014).
7. Vitamin D Supplementation for Childhood Asthma: A Systematic Review and Meta-Analysis. PLOS ONE (2015).
8. 25-Hydroxyvitamin D3-Deficiency Enhances Oxidative Stress and Corticosteroid Resistance in Severe Asthma Exacerbation. PLOS ONE (2014).
9. Vitamin D binding protein variants associate with asthma susceptibility in the Chinese han population. BMC Medical Genomics (2011).