Every entry.
All 69 Vital Codex entries, newest first. Tier I is free and open to everyone; Tier II adds the full mechanisms, dosing detail, and citations.
Iodine and the Thyroid Terrain
Iodine has one of the narrowest useful ranges of any nutrient. Too little and the thyroid cannot build hormone; too much and it shuts down.
Sun Exposure: Weighing Skin Cancer Risk Against Vitamin D and Beyond
The evidence supports avoiding sunburn, not avoiding sunlight — and the distinction has consequences for vitamin D status, nitric oxide, circadian timing, and all-cause mortality.
The Thyroid as Metabolic Thermostat: Reading the Panel Properly
Most thyroid complaints are evaluated with a single number. The tissue-level question — how much active hormone actually reaches the cell — requires more of the panel than TSH alone.
The Cortisol–Mitochondria Feedback Loop
How chronic glucocorticoid exposure alters mitochondrial morphology and respiratory capacity in the prefrontal cortex.