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

To assess the evidence on SARS-CoV2 infection and Covid-19 in relation to deficiency and
supplementation of vitamin D, we conducted a systematic review up to April 2021. We …

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 …

The immune system is key to host defense against pathogenic organisms. Aging is
associated with changes in the immune system, with a decline in protective components …

The pandemic of Coronavirus Disease 2019 (COVID-19) has shocked world health
authorities generating a global health crisis. The present study discusses the main finding in …

Aims The aim of this systematic review and meta‐analysis was to investigate the effect of
vitamin D supplementation on mortality and admission to intensive care unit (ICU) of COVID …

Vitamin D deficiency is a global public health problem, a pandemic that commonly affects
the elderly and those with comorbidities such as obesity, diabetes, hypertension, respiratory …

Abstract Coronavirus disease 2019 (COVID-19) is an infectious disease caused by severe
acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Coronavirus disease 2019 …

The value of vitamin D supplementation in the treatment or prevention of various conditions
is often viewed with scepticism as a result of contradictory results of randomised trials. It is …

Supplemental vitamin D can reduce the risk and mortality of viral pneumonia. The
relationship between 25 hydroxyvitamin D [25 (OH) D] levels and the severity and mortality …