Topic Deep Dive

Vitamin D: The Sun Hormone

Vitamin D is misnamed—it's actually a secosteroid hormone that controls thousands of genes. Taking a pill is not the same as making it from sunlight. Understanding this difference is crucial.

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Free Course

Vitamin D Optimization

Why supplements alone don't work and how to actually fix vitamin D deficiency.

The Sunlight Connection

Related Concerns

Vitamin D Discussion

The Bigger Picture

Vitamin D optimization is part of a larger light and circadian health strategy: