[ProtectOurFreedom]

Good video. It confirms what I learned about Vitamin D from Dr. Roger Seheult almost three years ago (April 21, 2020) on his Coronavirus Update 59: Dr. Roger Seheult's Daily Regimen (Vitamin D, C, Zinc, Quercetin, NAC). He starts off with a February 15, 2017 paper that covered a meta-analysis of over 11,000 subjects. The authors asked if Vitamin D could prevent acute respiratory tract infections. The answer was yes. For those with a Vit D deficiency (common in northern latitudes in winter), the Number Needed to Treat was only 4 to avoid infection, an astoundingly low NNT. It's good to see Campbell again confirming this.

Vitamin D supplementation to prevent acute respiratory tract infections: systematic review and meta-analysis of individual participant data

I started the Dr. Seheult regimen (similar to the many other COVID prophylaxis protocols) and I have not had a single respiratory infection since. I have always had one or two colds per year with most progressing to bronchitis and, in 2019, progressing to walking pneumonia. So I'm a believer in Vit D, zinc, NAC, Vit C, Quercetin, melatonin, and Black Seed Oil.

[ProtectOurFreedom]

Here is the Adjusted Odds Ratio chart. Left of the "1" vertical line indicates that was not a random effect.

[steve86]

“So I’m a believer in Vit D, zinc, NAC, Vit C, Quercetin, melatonin, and Black Seed Oil.”

I take those and others with the exception of black seed oil, and do not get colds, but sure as heck got hit by COVID (3 times).