Vitamin D

Beyond bone health — immune modulation, mood, and the optimal range debate.

2 articles · 20 min total

Vitamin D: The Most Important Supplement Most People Get Wrong

Vitamin D benefits and dosing from a physician. Optimal levels, cofactors K2 and magnesium, immune modulation, LL-37 upregulation, and why most people are deficient.

Apr 1, 2026 · 12 min read

Vitamin D: The Most Important Supplement Most People Get Wrong

LL-37 and Vitamin D: The Immune Connection

How vitamin D regulates LL-37 production and why this matters for immunity. The cathelicidin pathway, optimal levels, and clinical implications.

Apr 1, 2026 · 8 min read

LL-37 and Vitamin D: The Immune Connection

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