Vitamin D supplementation and COVID‑19 risk: a population‑based, cohort study
Supplementation with cholecalciferol or calcifediol helped subject to achieve serum 25OHD levels ≥30 ng/ml which were associated with better COVID-19 outcomes.
Supplementation with cholecalciferol or calcifediol helped subject to achieve serum 25OHD levels ≥30 ng/ml which were associated with better COVID-19 outcomes.
Vitamin D deficiency has a significant dose-response relationship with adverse clinical outcomes of COVID-19 infection, including hospitalization and mortality.
Vitamin D levels of healthy children (>6 years old) and adolescents decreased in the first year of the pandemic most likely due to the pandemic-related restrictions.
This systematic review reports that vitamin D supplementation is effective in reducing COVID19 severity

The Impact of Vitamin D Status on COVID-19 Severity among Hospitalized Patients in the Western Region of Saudi Arabia: A Retrospective Cross-Sectional Study
Nearly half of us — regardless of age, race, and home state — are deficient in the sun’s vitamin.
Vitamin D deficiency and obesity increases risk of testing positive for COVID-19.

This study recommends that people with darker skin supplement their diet with vitamin D3 through oral modes aiming to reduce the risk of adverse outcomes of...
Vitamin D deficiency/insufficiency was present in majority of hospitalized patients with COVID-19 or influenza A and correlated with severity and persisted in critical illness survivors at concentrations expected to disrupt bone metabolism.
Vitamin D and COVID-19 Infection Take Home Message Vitamin D deficiency
