Vitamin D, when activated to 1, 25‐dihydroxyvitamin D, is a steroid hormone that induces
responses in several hundred genes, including many involved in immune responses to …

The severity of coronavirus 2019 infection (COVID-19) is determined by the presence of
pneumonia, severe acute respiratory distress syndrome (SARS-CoV-2), myocarditis …

Vitamin D is produced in the skin under the influence of UVB light from the sun or obtained
via the diet by eating fatty fish, enriched dairy products or supplements. Vitamin D is known …

Evidence suggests that vitamin D supplementation could potentially be effective either in
treatment or prevention of coronavirus disease 2019 (Covid‐19). Indeed, several studies …

Vitamin D is a hormone that acts on many genes expressed by immune cells. Evidence
linking vitamin D deficiency with COVID-19 severity is circumstantial but considerable—links …

Laboratory evidence provides a biological rationale for the benefits of vitamin D in COVID-
19, and vitamin D supplementation is associated with reduced risk of respiratory infections …

The coronavirus disease 2019 (COVID‐19) pandemic has focused attention on the potential
role of vitamin D supplementation to prevent COVID‐19. In this issue, Merzon and …

Background Vitamin D deficiency has been linked to the increased severity of numerous
viral infections. Objective To assess whether vitamin D supplementation is safe and effective …

Background SARS‐CoV‐2 coronavirus infection ranges from asymptomatic through to fatal
COVID‐19 characterized by a 'cytokine storm'and lung failure. Vitamin D deficiency has …

Objective Current meta-analysis aims to understand the effect of oral supplementation of
vitamin D on intensive care unit (ICU) requirement and mortality in hospitalized COVID-19 …