Vitamin D: What's its role in fighting the #coronavirus?
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I was initially reluctant to look into it. I'm very skeptical of the supplement industry given that most supplements don't really work, which is connected to the fact that they're not regulated.
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The Braykinin hypothesis also points at other potential drugs that already exist: danazol, stanozolol, ecallantide, hymecromone, timbetasin (none tested)

They also propose Vitamin D, but unlike these other drugs, it has some evidence to support it.
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There has been some evidence that Vitamin D reduces mortality rates since at least May. The more Vit D, the less C-Reactive Protein, and the lower the mortality.

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https://www.medrxiv.org/content/10.1101/2020.04.08.20058578v4.full.pdf
This could also be one of the reasons why summertime reduces the size of outbreaks (along with more outdoors interactions, higher temp, higher humidity...)
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And a pretty low cost
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This might be especially useful now that so many ppl are staying indoors so much longer.
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So:
- There's evidence having more Vit D can help protect from the virus (prevent & treat)
- We have a hypothesis on how it works
- We might have a deficit anyways
- It's cheap to get supplementation and it works
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It sounds like a positive cost-benefit relationship.
So to be consistent, I started supplementation today.

Have I missed key science about Vit D?
Should I reach different conclusions?
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