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A comment on Vitamin D, part 2: Shannon's story. Parent comment

Re:Vitamin D, part 2: Shannon's story by SamBam on Monday August 24, 2020 @02:15PM (#24263591)
Any sources? I've seen much discussion of vitamin D and COVID, and they all appear to imply that supplements would help.
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Re:Vitamin D, part 2: Shannon's story by Alex3917 on Monday August 24, 2020 @02:23PM (#24263696)
https://pubmed.ncbi.nlm.nih.gov/24445737/
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Re:Vitamin D, part 2: Shannon's story by SamBam on Tuesday August 25, 2020 @01:13PM (#24273582)
That isn't a source for vitamin D supplements not having an effect on COVID, that's a source saying that sunlight is needed to produce nitric oxide.

Looking online, I see that there is a hypothesis that nitric oxide has a protective effect against COVID, but I don't see that this hypothesis is any better tested than the hypothesis that vitamin D itself has a protective effect against COVID.

So, sunlight will probably get you the best of both worlds, as it would help either way, but there doesn't seem to be real evidence for nitric oxide vs vitamin D.

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Re:Vitamin D, part 2: Shannon's story by Alex3917 on Tuesday August 25, 2020 @03:34PM (#24275118)
Yeah I would describe the evidence for both as circumstantial but fairly compelling, and very low risk. Even given the unknowns and potential risks, getting enough sun exposure is probably the best anti-Covid intervention from a cost-benefit perspective.
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