Vitamin D insufficiency or deficiency (VDD) is a very prevalent condition in the general
population. Vitamin D is necessary for optimal bone mineralization, but apart from the bone …

Background: Several studies suggest an association between serum 25-hydroxyvitamin D
(25OHD) and the outcomes of Severe Acute Respiratory Syndrome Corona-Virus-2 (SARS …

Pharmaceuticals | Free Full-Text | Protective Effect of Vitamin D Supplementation on COVID-19-Related
Intensive Care Hospitalization and Mortality: Definitive Evidence from Meta-Analysis and …

Purpose Vitamin D deficiency/insufficiency may increase the susceptibility to coronavirus
disease 2019 (COVID-19). We aimed to determine the association between vitamin D …

COVID-19 Mortality Risk Correlates Inversely with Vitamin D3 Status, and a Mortality Rate
Close to Zero Could Theoretically Be Achieved at 50 ng/mL 25(OH)D3: Results of a …

Background Associations between vitamin D (VD) deficiency and the risk of SARS-CoV-2
infection have been documented in cross-sectional population studies. Intervention studies …

Background The evidence regarding the efficacy of vitamin D supplementation in reducing
severity of COVID-19 is still insufficient. This is partially due to the lack of primary robust trial …

Background Vitamin D status has been implicated in COVID-19 disease. The objective of the
COVID-VIT-D trial was to investigate if an oral bolus of cholecalciferol (100,000 IU) …

COVID-19 symptoms vary from asymptomatic cases to moderate and severe illness with
patients needing hospitalization and intensive care treatment. Vitamin D is associated with …

This review aims to evaluate the efficacy of any vitamin administration (s) in preventing and
managing COVID-19 and/or long-COVID. Databases were searched up to May 2023 to …