...found that patients with vitamin D deficiency were 14 times more likely to have a severe or critical case of COVID-19.
Mortality among patients with sufficient vitamin D levels was 2.3%, compared with 25.6% in the deficient group.
This information has been posted here for two years... yet by a couple at least... has been cast as anti-vaxxer, anti-science, unfounded, death cult member misinformation.
Bob - I have commented many times on this correlation.
And also pointed out why there are good reasons for it not to be causal the way you'd like (and I'd like - we would all like that).
Vit D deficiency correlates strongly with many factors that make for poor health, for example bad diet. It also correlates with poor socioeconomic status an hence(on average) more cramped living conditions, another route for higher COVID infection rates. It is not surprising that those with poorer health, or living in multi-occupancy dense accomodation, are more likely to have severe COVID.
All you need for 10X higher COVID severe disease rate (to take one example) is something selects people to be on average 18 years older. (Vitamin D defiency does not correlate with age, but it does with other things).
I can't stop you from dismissing this as pinko political argument - or however you dismiss it. It is what serious scientists believe because the data is like that. It does not prove Vit D has no effect on COVID, but we have seen this type of correlation many times before with many diseases and 90% of the time there has been no correlation bwteeen Vit D supplementation and the desired (more healthy) outcome, when those who supplement are not self-selecting as those more healthy. (Taking Vit D supplements itself in the population at large is not at all neutral for health - it correlates with people health-conscious in many ways).
I would not repeat this stuff, except this is a science site - even in the Playground...
Also, I get pissed off (a bit) by people like you (I believe you may be doing this, forgive me if I'm jumping to conclusions) claiming I am ignoring evidence when I have precisely commented on this type of evidence many times, and why it does not show what you might think it shows.
Should any of the credible (not the weird retracted Spanish one I liked for a while) Vit D against COVID RCTs show positive results, believe you me, it will be big news and no-one will be happier than I at such a simple preventative.
THH