The clinical course and outcome of COVID-19 are highly variable, ranging from
asymptomatic infections to severe disease and death. Understanding the risk factors of …

Evidence supporting the extra-skeletal role of vitamin D in modulating immune responses is
centred on the effects of its final metabolite, 1, 25-dihydroxyvitamin D3 (1, 25 (OH) 2D3, also …

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 …

Vitamin D supplementation and its impact on immunoregulation are widely investigated. We
aimed to assess the prevention and treatment efficiency of vitamin D supplementation in the …

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 …

The coronavirus disease 2019 (COVID-19) pandemic caused by the Severe Acute
Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) has become a global health crisis and …

The coronavirus disease 2019 (COVID-19) has already killed more than 6 million people
around the world. A growing body of epidemiological evidence suggests that low 25-hydroxy …

Active vitamin D [1, 25 (OH) 2D3—calcitriol] is a secosteroid hormone whose receptor is
expressed on all cells of the immune system. Vitamin D has a global anti-inflammatory effect …

The elderly and those with underlying chronic diseases (ie, comorbidities) such as
pulmonary, cardiovascular, metabolic, and renal diseases, increase their susceptibility to …

Objective To analyze the impact of different methods of Vitamin D administration on the
prognosis of COVID-19 patients. Methods A comprehensive literature search was conducted …