Mendelian randomization helps to tease out causality, and there does not seem to be a causal link between Vitamin D level and COVID-19.Click here to subscribe:Get more medical news analysis at or calcitriolcholecalciferolCoronaviruscoronavirus newscoronavirus updateCOVID-19COVID19Critical ThinkingDatadoctorepidemiologyergocalciferolhealthimmune systemIMMUNITYMDmedicinemethods mannewsperry wilsonphysicianPREVENTresearchresearchersciencescientiststatisticssupplementsvideoVITAMINvitamin COVID-19Vitamin Dvitamin d and coronavirusvitamin d and covidVitamin D and COVID-19vitamin d benefitsvitamin d deficiencyvitamin d deficiency symptomsvitamin d supplementsvitamin d3vitamins to prevent COVIDvlogYaleYouTube