A possible role of vitamin D in the treatment of COVID-19 disease.

Vitamin D has antimicrobial and immunomodulatory activities playing an essential role as an adjuvant treatment to reduce the incidence and severity of various conditions, including influenza and recurrent respiratory infections. Vitamin D insufficiency and deficiency are reported by many countries, especially in the elderly population, requiring intervention by vitamin D supplementation even before the onset of the COVID-19 pandemic. From the beginning of the pandemic, it was considered that vitamin D has a role in preventing and treating COVID-19. The few available studies show a perspective of vitamin D therapy in preventing and early treatment of SARS-CoV-2 infection. [ABSTRACT FROM AUTHOR]