As the world's attention has been riveted upon the growing COVID-19 pandemic, many
researchers have written brief reports supporting the hypothesis that vitamin D deficiency is …

Vitamin D deficiency co-exists in patients with COVID-19. At this time, dark skin color,
increased age, the presence of pre-existing illnesses and vitamin D deficiency are features …

OBJECTIVES Although vaccination has started, coronavirus disease 2019 (COVID-19)
poses a continuing threat to public health. Therefore, in addition to vaccination, the use of …

Structured abstract Importance Vitamin D deficiency increases the incidence of respiratory
virus infections. More than 1 billion people worldwide are vitamin D deficient. If vitamin D …

There is still limited evidence regarding the influence of vitamin D in people with COVID-19.
In this systematic review and meta-analysis, we analyze the association between vitamin D …

Objective The 2019 coronavirus disease (COVID-19) pandemic has disproportionally
affected a variety of patients with underlying risk factors such as respiratory and …

Importance Vitamin D treatment has been found to decrease incidence of viral respiratory
tract infection, especially in vitamin D deficiency. It is unknown whether COVID-19 incidence …

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

Background Evidence recommends that vitamin D might be a crucial supportive agent for
the immune system, mainly in cytokine response regulation against COVID‐19. Hence, we …

Background: Coronavirus disease (COVID-19) is a respiratory and systemic disorder caused
by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) or novel Coronavirus …