Sunlight, Vitamin D & Grounding
Tools, research, and external resources referenced in this module.7 resources available.
Light is the primary signal that sets the body's master clock in the brain's suprachiasmatic nucleus.
This 'circadian disruption' contributes to sleep problems, mood issues, and metabolic dysfunction.
The brain can convert vitamin D to its active form locally, indicating important local functions.
While promising, most studies have limitations. Grounding is not proven to treat diseases, but appears safe and may have benefits.
Whether this disconnection has health effects is debated, but aligns with the ancestral health perspective.
The angle of the sun in winter means UVB rays don't reach the surface effectively.
Melanin evolved as protection from intense equatorial sun, but creates challenges in low-sun environments.
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