# Health Canon

> Health Canon is an independent long-form health optimization publication: environmental exposures (PFAS, microplastics, mold, EMF, fluoride, water), metabolic health, light/sauna recovery, fitness protocols for men and women, nutrition quality, hormones/genes, and evidence-graded expert dossiers — dense, cited, dose-aware, continuously expanded.

Coverage focus: PFAS, microplastics, water filtration, mold, EMF, fluoride, seed oils, insulin resistance, red light therapy, sauna, organic foods, MTHFR, iron overload, strength training, and graded analysis of influential health voices. Authoritative, sourced, frequently updated.

## Latest Articles

- [RED-S Warning Signs in Women: What to Watch For (2026)](https://healthcanon.com/womens-health/best-womens-reds-warning-signs-2026): Energy availability red flags: menstrual changes, fatigue, injuries, mood—act early, fuel, and get multidisciplinary care.
- [The Sunlight and Circadian-Rhythm Routine (2026)](https://healthcanon.com/light-and-recovery/best-sunlight-circadian-stack-2026): Morning outdoor light, daytime activity light, dim evenings, dark sleep—UV safety without cave dwelling.
- [Sex-Specific Health Optimization: What Actually Differs (2026)](https://healthcanon.com/fitness/best-sex-specific-health-optimization-map-2026): Where sex-aware programming matters—and where fundamentals are shared—without myths or one-sex defaults.
- [The Seed-Oil Evidence, Mapped (2026)](https://healthcanon.com/nutrition/best-seed-oil-evidence-map-2026): Map essential LA, RCT vs observational tension, frying oxidation, and pattern-first swaps—without purity cults.
- [Red Light Therapy Safety: The Checklist (2026)](https://healthcanon.com/light-and-recovery/best-red-light-safety-checklist-2026): Eye protection, dose honesty, photosensitizing meds, skin checks—before protocol chasing.
- [Parasite Test Types, Explained (2026)](https://healthcanon.com/environmental-health/best-parasite-test-types-explained-2026): Stool O&P, antigen/PCR panels, blood tests by parasite—clinician-ordered, exposure-matched; no cleanse kits.
- [Buying Organic Dairy and Meat: Practical Rules (2026)](https://healthcanon.com/nutrition/best-organic-dairy-meat-rules-2026): Budget rules for organic milk, eggs, and meat—where labels matter, where protein density wins, no halo junk.
- [MTHFR: What to Do and What to Skip (2026)](https://healthcanon.com/hormones-and-genes/best-mthfr-do-and-dont-list-2026): Do food folate and pregnancy-era folic acid evidence; don't routine SNP panic or detox methylation stacks.
- [Mold Remediation, in Priority Order (2026)](https://healthcanon.com/environmental-health/best-mold-remediation-priority-stack-2026): Moisture control first, then remove damaged porous materials, PPE, and clean—bleach last, fogging theater later.
- [Microplastics: From Lab Headlines to Daily Habits (2026)](https://healthcanon.com/environmental-health/best-microplastic-lab-to-lifestyle-map-2026): Map uncertain biomarkers to high-yield habits: no heat in plastic, water choices, dust, laundry—without purity panic.
- [Strength Training After 40 for Men: The Rules (2026)](https://healthcanon.com/mens-health/best-mens-masters-training-rules-2026): Progressive strength, longer warm-ups, smarter volume, recovery, and medical screens—no T-clinic ego lifting.
- [Screening for Iron Overload: Step by Step (2026)](https://healthcanon.com/metabolic-health/best-iron-overload-screening-steps-2026): Ferritin+TSAT sequence, inflammation context, HFE when indicated—screen without portal panic.
- [Insulin Resistance: Your First 90 Days (2026)](https://healthcanon.com/metabolic-health/best-insulin-resistance-first-90-days-2026): Confirm labs, build lifting + walks, protein-forward meals, sleep—meds when indicated; no 30-day detox myths.
- [How to Actually Remove Fluoride From Water (2026)](https://healthcanon.com/environmental-health/best-fluoride-removal-options-ranked-2026): RO, distillation, and specialty media ranked by fluoride reduction honesty—measure mg/L before buying.
- [Reducing EMF Exposure: A Practical Checklist (2026)](https://healthcanon.com/environmental-health/best-emf-exposure-reduction-checklist-2026): Distance, night radios off, wired links, and honest RF hygiene—physics without sticker scams.
- [Whole-House vs Point-of-Use Water Treatment: Choosing the Right Layer](https://healthcanon.com/environmental-health/water-whole-house-vs-point-of-use): POU RO/GAC targets drinking/cooking; whole-house systems address sediment, hardness, or volatile chemicals at every tap—with tradeoffs.
- [UV and Distillation for Drinking Water Pathogens: What They Do and Miss](https://healthcanon.com/environmental-health/water-uv-distillation-pathogen-control): UV inactivates many microbes without chemicals; distillation separates pure water vapor—neither is a universal metals/PFAS solution.
- [RO Remineralization Debate: Minerals, Taste, and What Evidence Actually Requires](https://healthcanon.com/environmental-health/water-ro-remineralization-debate): RO strips dissolved solids; remineralization improves taste and can restore some hardness—diet remains the main mineral source for most people.
- [NSF/ANSI 42, 53, 58, and 401: Water Filter Standards Decoder](https://healthcanon.com/environmental-health/water-nsf-ansi-42-53-58-401-decoder): 42 aesthetic, 53 health adsorption, 58 RO, 401 emerging compounds—certification is claim-specific and model-specific. “Tested to NSF” is weaker than listed certification.
- [Heavy Metals in Drinking Water: Lead, Arsenic, and Copper Filter Priorities](https://healthcanon.com/environmental-health/water-heavy-metals-lead-arsenic-copper): Lead from plumbing, arsenic from geology, copper from corrosion—each needs different testing and treatment logic.
- [Vitamin D Cutaneous Synthesis: UVB, Skin, Latitude, and What Windows Block](https://healthcanon.com/light-and-recovery/vitamin-d-cutaneous-synthesis-biology): Skin makes vitamin D from UVB; glass, latitude, season, melanin, and age change yield—supplements fill gaps sunlight cannot.
- [Upper/Lower Split Programming for Men: Frequency, Volume, and Progression](https://healthcanon.com/fitness/upper-lower-split-men-programming): Upper/lower splits hit muscles ~2×/week with manageable session length—strong default for intermediates chasing strength and hypertrophy.
- [Sunlight and Skin Cancer Epidemiology: Risk Patterns Beyond Fear or Denial](https://healthcanon.com/light-and-recovery/sunlight-skin-cancer-epidemiology-risk): UV is a major skin cancer driver; risk rises with cumulative and intense intermittent exposure, phenotype, and history.
- [Sunlight Sex Axes: Vitamin D, Skin Cancer, and Shared Daylight Biology](https://healthcanon.com/light-and-recovery/sunlight-sex-axes-synthesis): Women show different vitamin D distributions and clothing/behavior patterns; men have distinct skin cancer mortality patterns in some datasets.
- [Strength Training Prescription for Women: Loading, Progression, and Underloading Traps](https://healthcanon.com/fitness/strength-training-prescription-women-loading): Women respond to progressive heavy loading; chronic underloading “for safety” is a common reason programs stall.
- [Seed Oils in Special Populations: Pregnancy, Secondary Prevention, and Clinical Context](https://healthcanon.com/nutrition/seed-oils-special-populations-context): Essential FA needs, secondary-prevention trial limits, and frying exposure differ by clinical context—not by internet purity contests.
- [Ramsden Reanalyses of Seed-Oil Era Trials: Sydney Diet Heart and Minnesota Coronary](https://healthcanon.com/nutrition/seed-oils-ramsden-historical-reanalyses): Recovered data show pure high-linoleic interventions did not deliver the mortality free lunch mid-century narratives promised.
- [Seed Oils on Sex Axes: Men, Women, Pregnancy, and What Trials Show](https://healthcanon.com/nutrition/seed-oils-mens-womens-sex-axes): Men convert less ALA to EPA/DHA; pure-LA harm signals were male-heavy; pregnancy needs DHA—not zero linoleic acid.
- [Seasonal and Regional Eating Decision Framework: Evidence vs Romanticism](https://healthcanon.com/nutrition/seasonal-regional-eating-decision-framework): Local and seasonal food can raise produce intake and cut some emissions—but is not automatically more nutritious or safer.
- [Sauna Sex Axes: What Male KIHD Data Can and Cannot Say for Women](https://healthcanon.com/light-and-recovery/sauna-sex-axes-synthesis): SCD and dementia HRs from Finnish men are not gender-swappable; pregnancy leads female risk.

## Topic Hubs

- [Environmental Health](https://healthcanon.com/environmental-health): PFAS, microplastics, fragrances, mold, EMF, fluoride, water quality, and exposure science — dose-aware and cited.
- [Metabolic Health](https://healthcanon.com/metabolic-health): Insulin resistance, seed oils, iron overload, MTHFR, and metabolic optimization with evidence grades.
- [Light & Recovery](https://healthcanon.com/light-and-recovery): Sunlight, red light therapy, sauna, circadian hygiene, and heat/light recovery protocols.
- [Fitness](https://healthcanon.com/fitness): Evidence-based strength training, conditioning, recovery, and sex-specific fitness protocols.
- [Nutrition](https://healthcanon.com/nutrition): Organic foods, seasonal/regional eating, dietary patterns, and quality upgrades that matter.
- [Hormones & Genes](https://healthcanon.com/hormones-and-genes): MTHFR, iron overload genetics, water hormones, and gene–nutrient interactions — graded carefully.
- [Men's Health](https://healthcanon.com/mens-health): Male physiology, fitness, environmental exposures, and optimization with sex-tagged evidence.
- [Women's Health](https://healthcanon.com/womens-health): Female physiology, fitness, pregnancy windows, and optimization with sex-tagged evidence.
- [Expert Dossiers](https://healthcanon.com/expert-dossiers): Evidence-graded analysis of influential health voices — kernels kept, speculation quarantined.

## About

- [Editorial & Corrections Policy](https://healthcanon.com/editorial/editorial-policy): How we report and correct.
- [About](https://healthcanon.com/about): Masthead and mission.

## Optional

- [Complete Site Content (full text)](https://healthcanon.com/llms-full.txt): All priority content as concatenated markdown.