Wikipedia: Vitamin D

Encyclopedia article on vitamin D photochemistry in skin, dietary sources, deficiency states, and bone/immune themes—useful bridge between sunlight protocols and fracture-risk literature.

Link to sunlight protocols

Explains 7-dehydrocholesterol → cholecalciferol under UVB, latitude/skin-type modifiers, and why short outdoor exposure can still move serum 25(OH)D.

Evidence discipline

Population mortality and fracture statistics on Wikipedia change with edits; treat as navigation, then read the PubMed cohorts and reviews already linked from daily-sunlight and sunlight-for-bone-health.

Outcomes

Fracture Risk
Tertiary overview only; quantitative fracture or bone-density outcomes require primary studies linked from sunlight-for-bone-health

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