Topic
Water
Water 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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Environmental Health
Whole-House vs Point-of-Use Water Treatment: Choosing the Right Layer
POU RO/GAC targets drinking/cooking; whole-house systems address sediment, hardness, or volatile chemicals at every tap—with tradeoffs.
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Environmental Health
UV and Distillation for Drinking Water Pathogens: What They Do and Miss
UV inactivates many microbes without chemicals; distillation separates pure water vapor—neither is a universal metals/PFAS solution.
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Environmental Health
RO Remineralization Debate: Minerals, Taste, and What Evidence Actually Requires
RO strips dissolved solids; remineralization improves taste and can restore some hardness—diet remains the main mineral source for most people.
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Environmental Health
Heavy Metals in Drinking Water: Lead, Arsenic, and Copper Filter Priorities
Lead from plumbing, arsenic from geology, copper from corrosion—each needs different testing and treatment logic.
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Environmental Health
PFAS Chemistry, Classification, and Why They Persist as Forever Chemicals
OECD 2021 structural definition, long- vs short-chain classes, C–F bond strength, and multi-year serum half-lives—not infinite, but extreme.
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Environmental Health
Topical vs Systemic Fluoride: Different Jobs, Different Doses
Modern caries prevention is largely topical. Systemic water fluoride is a population tool with different risk math.
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Environmental Health
Skeletal Fluorosis: High-Dose Bone Disease, Not Trace Water Panic
Crippling skeletal fluorosis tracks endemic high intake over years—not U.S. 0.7 mg/L community water alone.
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Environmental Health
Fluoride Total Intake: Water, Food, Dental Products, and Tea
Systemic dose is the sum of routes. Water is not the only term in the equation.
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Environmental Health
Fluoride Household Decision Framework: Water, Kids, Filters, Dentist
A practical ladder: measure water, rank goals (caries vs exposure preference), protect kids’ swallow dose, pick tools.
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Environmental Health
Global Fluoride Hotspots: Where Natural Water Exceeds Policy Targets
Rift Valley, parts of India, China, and Mexico face geologic fluoride far above 0.7 mg/L. Defluoridation—not culture-war CWF—is the intervention.
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Environmental Health
Fluoride Chemistry: Forms in Water, Toothpaste, and Geology
Utilities add fluorosilicic acid or NaF; monitoring targets F⁻ ion. Toothpaste ppm is not water mg/L.
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Women's Health
Fluoride in Pregnancy and Child Neurodevelopment: The Evidence Debate
NTP moderate confidence: higher fluoride ↔ lower child IQ (spotlight often >1.5 mg/L); CWF at 0.7 mg/L remains contested—dose and biomarkers matter.
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