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arthurus wrote: :No. D probably does not prevent CCP but it will ameliorate it. I know quite a few people now who have been taking D3 for a few years and who got it in Feb-March last year. None had it as bad as normal bouts of flu. One went to the doctor with pneumonia and he cleared that up with normal treatment, an antibiotic and an albuterol inhaler.”

I’m not so sure it’s the Vitamin D. Sure, people with high levels of Vitamin D do better, but is that because of the Vitamin D or because of something else. It’s been known for some time that people with high levels of Vitamin D are healthier, on average, than those who don’t. It’s been hypothesized that people who are healthier are out in the sun more and therefore, they have higher levels of Vitamin D. But the question is, does the higher levels of Vitamin D make them healthier or do they have high levels of Vitamin D because they are healthier. It should be obvious that healthier people will suffer less from COVID than those who are not so healthy. Perfect example of chickens and eggs.

Well, so many questions. You had certainly best avoid D3.
Wife has High blood pressure and diabetes and a couple of other continuing problems. She is only one but she had no serious effects from the CCPFlu.
I seldom see the sun as I work at night and have for 16 years. My job has ben pretty sedentary for a long time. I am 75 years old so that is "against" me. I take D3 and zinc and C and a bunch of other supps for arthritis and prostate and some etcs.

Hmmm. Questions have been raised about the study cited in my previous post, so I’m not sure if that’s valid or not.

I ran across another study that says treating moderate and severe COVID patients with high dose Vitamin D (200,000 IU) doesn’t help.

Maybe Vitamin D status and COVID outcomes are just correlational, but I still doubt that.

On the other hand, maybe VItamin D supplementation can help with some COVID cases. Small study but randomized placebo controlled.

https://pubmed.ncbi.nlm.nih.gov/33184146/#page7