“ Coronavirus update Consider taking 10 micrograms of vitamin D a day to keep your bones and muscles healthy.
This is because you may not be getting enough vitamin D from sunlight if you’re indoors most of the day.
There have been some news reports about vitamin D reducing the risk of coronavirus. However, there is no evidence that this is the case.”
[1] https://www.nhs.uk/conditions/vitamins-and-minerals/vitamin-...
"No evidence" makes it sound like there is actually no evidence. There is evidence - it just got linked in the two comments that make up the root of this thread.
> COVID-19 appears to disproportionately affects black and minority ethnic individuals. The underlying mechanism is unknown.
> One potential mediator could be their higher prevalence of apparent vitamin D deficiency.
> We explored whether blood 25 hydroxyvitamin D (25(OH)D) concentration was associated with COVID-19 risk.
> We found no evidence that (25(OH)D) explains susceptibility to COVID-19 infection, either overall or between ethnic groups.