That is the question. Quite a few studies suggest a correlation of Vitamin D and COVID-19 severity, but we do not not if there is a causality or if vitamin D le

That is the question. Quite a few studies suggest a correlation of Vitamin D and COVID-19 severity, but we do not not if there is a causality or if vitamin D levels are just marker. But it is not wrong to avoid vitamin d deviciency in any case. It is also easy and cheap.