Expert Consensus Score
Vitamin K2
Moderate Consensus
out of 5
Based on 11 videos across 5 experts · Updated 2026-03-21
Expert Positions
The Verdict
3 of 5 experts recommend vitamin K2 — Hyman always pairs it with D3, Patrick provides the deepest mechanism via Triage Theory, and Johnson takes D3K2 daily. Attia conspicuously omits K2 from his bone health 'big three' (calcium, D3, magnesium) despite extensive bone health content. Huberman has zero coverage.
Quick Protocol
Dosage
100-200mcg MK-7 daily is the commonly cited supplemental dose. No expert specifies an exact K2 dosage in analyzed videos — Hyman and Johnson take it as part of a combined D3/K2 supplement.
Form
MK-7 (menaquinone-7) is the most common supplemental form due to longer half-life. Combined D3/K2 supplements are the most practical format. Food sources include natto (highest K2 content), hard cheeses, egg yolks, and grass-fed butter.
Timing
Take with a fat-containing meal for absorption, same as vitamin D. Morning or midday preferred. Take alongside vitamin D3 for synergistic calcium metabolism.
Key Findings
- Hyman always pairs vitamin D3 with K2 — he considers them inseparable and lists D3+K2 among his top 3 foundational supplements alongside a multivitamin and fish oil.
- Patrick explains K2's importance through Triage Theory: when vitamin K is scarce, the body prioritizes K1 for clotting over K2-dependent proteins that prevent arterial calcification — making K2 a 'longevity vitamin' whose benefits are sacrificed in deficiency.
- Johnson describes vitamin D and K2 as 'the workers that facilitate calcium absorption and binding' to bones — without K2, supplemental calcium may deposit in arteries instead of bone.
- Attia defines bone health micronutrients as 'the big three: calcium, D3, and magnesium' across 5+ bone health episodes — K2 is absent from every discussion. This is the most notable expert omission in the report.
+ 3 more findings in the full report
Read the Full Vitamin K2 Report
Expert deep dives, video citations with timestamps, risks, synergies, and detailed protocol.
View Full Report