John Campbell: BBC and vitamin D
Peer-Reviewed Research
Key Takeaways
- Test your vitamin D levels – Aim for >75 nmol/L (30 ng/mL) to reduce respiratory infection risk by 33% vs. deficient levels (<15 nmol/L).
- Supplement with vitamin D3 – The speaker took 4,000-8,000 IU daily to maintain 102 nmol/L (41 ng/mL), far above UK’s 400 IU recommendation.
- Prioritize vitamin D year-round – Deficiency is linked to higher risks of COVID-19, pneumonia, cancers, dementia, and autoimmune diseases.
Supplements & Protocols Mentioned
- Vitamin D3 – 4,000-8,000 IU daily (speaker’s personal dose achieving 102 nmol/L)
- UK government recommendation: 400 IU (10 mcg) daily (considered too low by speaker)
Notable Quotes
“Good levels of vitamin D protect against Covid. Low levels of vitamin D predispose to Covid. Same for influenza, same for bronchitis, same for the lower respiratory infections such as pneumonia.”
Bottom Line
Get your vitamin D levels tested and supplement with 4,000+ IU D3 daily to significantly reduce infection risks and improve overall health outcomes.
Explore supplements mentioned in this video
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- John Campbell’s Full Protocol — supplements, dosages, and daily routine
- Compare All Protocols — side-by-side protocols
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Medical Disclaimer
This article is for informational purposes only and does not constitute medical advice. The research summaries presented here are based on published studies and should not be used as a substitute for professional medical consultation. Always consult a qualified healthcare provider before making any changes to your health regimen.
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