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Category: Supplements
Evidence Assessment
Evidence Strength
Strong
Study Type
Systematic Review
Confidence
High
Key Findings
- Why over 1 billion people are deficient, what levels are optimal (not just 'normal'), the VITAL trial evidence on cancer and mortality, the cofactors needed (K2, magnesium), and dosing protocols
Practical Takeaways
- Review the evidence on vitamin D with your healthcare provider
- Evidence-based protocols are detailed in the full article
Limitations & Caveats
- Individual results vary
- Consult a healthcare provider before major interventions