The Ben Azadi Show They Knew 600 IU Wasn’t Enough - The Vitamin D Myth Fueling Inflammation, Insulin Resistance, and Immune Dysfunction With Ben Azadi | #1257
Feb 22, 2026
They challenge the 600 IU vitamin D norm and reveal why current lab ranges can hide deficiency. They explain vitamin D acting like a steroid hormone affecting immunity, inflammation, insulin sensitivity, muscle and brain. They link insulin resistance and obesity to low vitamin D and stress the need for cofactors like magnesium and K2. Practical tips include smart midday sun, supplementation strategies, and regular testing.
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600 IU Was For Rickets Not Optimization
- The 600 IU vitamin D RDA was set to prevent rickets, not to optimize immunity or metabolism.
- Independent reanalysis showed required intakes were dramatically higher, yet official recommendations barely changed.
Vitamin D Functions Like A Steroid Hormone
- Vitamin D acts like a steroid hormone with receptors in nearly every cell, influencing T cell activation, inflammation, muscle synthesis, and neurotransmitter production.
- Low vitamin D links to respiratory infections, mood disorders, metabolic syndrome, autoimmune activity, and cancer risk.
Modern Life Cuts Natural Vitamin D Production
- Modern lifestyle reduces sun-driven vitamin D: indoor living, sunscreen, glass blocking UVB, and aging skin lowering synthesis (~25% by age 60).
- Identical RDAs ignore individual variation like age and skin conversion capacity.