Foundational
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.
Supplements
Strong EvidenceVitamin D
Beyond bone health — immune modulation, mood, and the optimal range debate.
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02
Vitamin D as a Neuroimmune Signal: Mental Health Applications Beyond Bone
How vitamin D acts as a lifespan neuroimmune signal in psychiatry — from depression and schizophrenia to autism and cognitive decline. Clinical dosing and evidence.
03
Klotho Protein: The Anti-Aging Hormone That Controls How Fast You Age
Klotho protein declines with age and predicts cognitive decline, kidney disease, and cardiovascular risk. Here's what the science says about boosting it.
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Boron: The Overlooked Mineral for Testosterone, Bone Density, and Inflammation
Dr. Julian Douwes reviews why boron belongs in a serious longevity stack — from free testosterone elevation and bone protection to vitamin D activation and CRP reduction.
05
Anti-Aging Supplements: A Physician's Actual Stack for Longevity
A practicing physician's evidence-based anti-aging supplement stack. NAD+, resveratrol, CoQ10, omega-3, vitamin D — what works, what's overhyped, and what I actually take.
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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.
