Topic
Circadian
Circadian is a recurring research topic on Health Canon. This hub collects related explainers and protocols, newest first, each with evidence grades and practical decision frameworks.
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Light & Recovery
The Sunlight and Circadian-Rhythm Routine (2026)
Morning outdoor light, daytime activity light, dim evenings, dark sleep—UV safety without cave dwelling.
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Light & Recovery
Sunlight and Vitamin D: A Decision Guide (2026)
Latitude, season, skin, and labs first—then sun, food, and supplements without tanning extremism.
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Light & Recovery
Indoor Lifestyle Costs: Vitamin D Gaps Plus Circadian Light Deficiency
Modern indoors deliver a double hit: weak UVB for vitamin D and weak daytime melanopic light plus evening screen excess. Mitigate with morning outdoor light, workplace daylight, oral D when indicated—not tanning beds.
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Light & Recovery
Sunlight, Mood, and Seasonal Affect: Serotonin Stories Graded Against Light Therapy Evidence
Daylight and bright light therapy help seasonal mood patterns for many people. “Serotonin sun” slogans are simplified. Use dawn outdoor light and clinical LT when indicated—not tanning beds.
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Light & Recovery
Evidence-Based Circadian Habits (2026)
Circadian habits with evidence: morning outdoor light, dim evenings, stable sleep timing, caffeine cutoffs, modest meal regularity, and shift-work harm reduction.
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Expert Dossiers
Jack Kruse Central Dogma: Light–Water–Magnetism Hierarchy Graded
The stack is a totalizing hierarchy: light and nnEMF first, water as medium, food second-order. Extract kernels; reject ranking absolutism as clinical policy.
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Light & Recovery
Light-Hygiene Habits for Better Sleep (2026)
Circadian light habits for sleep: morning outdoor light, dim evenings, bedroom dark, consistent schedule—screens and gadgets ranked by real effect size.
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Metabolic Health
Sleep, Circadian Rhythm, and Insulin Resistance
Short sleep and night light are metabolic exposures—not soft lifestyle footnotes.
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Light & Recovery
Circadian Daylight and Melanopic EDI: Why Eyes Beat UV for Sleep Timing
≥250 melanopic lux days, ≤10 evenings, dark nights—visible light, not tanning.
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Expert Dossiers
Jack Kruse: The Habits Worth Keeping (2026)
Kernel-only ranking: circadian light, night hygiene, moderate cold, seafood omega-3s, meal structure, and an explicit quarantine list—not an endorsement.
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Light & Recovery
Sunlight Benefits and Risks: A Photobiology Balance Guide
Vitamin D, circadian light, UVA vascular claims, and cancer risk—pathway by pathway, without tan-for-health myths.
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Expert Dossiers
Jack Kruse Evidence Dossier: Graded Claims on Light, Cold, Leptin & EMF
Neither hagiography nor hit piece — grade Jack Kruse claims A–D. Keep circadian light hygiene and fish-fat kernels; quarantine quantum lifestyle monocauses, CT cure lists, structured-water medicine, and nnEMF primacy.
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Light & Recovery
Jack Kruse Circadian Light Claims: Melanopsin Kernel vs Obesity Slogan
Morning daylight entrains the clock. That does not make light the primary cause of the obesity epidemic.
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