Vitamin D and allergic rhinitis: A mini-review

Area of Science:

• Immunology
• Allergology
• Endocrinology

Background:

• Allergic rhinitis (AR) is a prevalent inflammatory condition impacting global health.
• Vitamin D, an immunomodulatory hormone, is being investigated for its influence on allergic diseases like AR.
• Observational studies suggest a correlation between low serum 25-hydroxyvitamin D and increased AR prevalence, especially in children and males.

Purpose of the Study:

• To synthesize current evidence on the relationship between vitamin D levels and allergic rhinitis.
• To explore epidemiological findings and immunological mechanisms linking vitamin D and AR.
• To assess the potential of vitamin D as an adjunctive therapy for AR.

Main Methods:

• Review of epidemiological studies on vitamin D and AR prevalence.
• Analysis of immunological mechanisms of vitamin D's effect on immune responses.
• Evaluation of interventional studies on vitamin D supplementation for AR treatment.

Main Results:

• Observational data suggest a link between lower vitamin D levels and higher AR risk/severity.
• Interventional studies on vitamin D supplementation for AR have produced inconsistent results.
• Potential benefits of vitamin D may depend on individual factors like baseline levels, gender, and age.

Conclusions:

• Emerging evidence suggests vitamin D deficiency may worsen AR, but its therapeutic role is not definitively established.
• Further high-quality randomized controlled trials are necessary to clarify mechanisms and guide clinical practice.
• Individualized treatment strategies considering patient profiles are needed for optimal AR management with vitamin D.