Vitamin D and allergic rhinitis: A mini-review

Table 2 Vitamin D and allergic rhinitis

Classification
AR	An immunoglobulin E-mediated inflammatory condition
	Triggered by exposure to airborne allergens
Vitamin D	A hormone with immunomodulatory properties
	Deficiency in vitamin D has been implicated in the pathogenesis of AR
Immunological mechanisms	Modulates both innate and adaptive immune responses
	Suppresses the production of pro-inflammatory cytokines
	Enhances the development and function of regulatory T cells
Clinical evidence	Studies on vitamin D supplementation have yielded mixed results
	Some evidence suggests potential improvement in AR symptoms

AR: Allergic rhinitis.