Topic
Forever Chemicals
Forever Chemicals 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
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
PFAS Half-Lives Explained: Why Serum Body Burden Takes Years
Long-chain PFAS clear over years—not hours—because of protein binding and kidney reabsorption. Half-life ranges, Ronneby data, and what “forever” actually means.
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Environmental Health
Best Water Filters for PFAS in 2026: RO, Carbon, Pitchers
Evidence-ranked household PFAS treatment: NSF 58 RO, NSF 53 carbon, pitcher limits, anion exchange, distillation, and whole-house realism.
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Environmental Health
PFAS Removal: Reverse Osmosis vs Activated Carbon Filters
GAC handles many long-chain PFAS until breakthrough; RO is the more consistent barrier for short- and long-chain compounds when certified and maintained.
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Environmental Health
PFAS Forever Chemicals: Complete Guide to Exposure, Health Evidence & Mitigation
EPA drinking-water MCLs are now 4.0 ppt for PFOA and PFOS. Here is how forever chemicals enter the body, what half-lives and biomonitoring tiers mean, and which filters actually work.
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Environmental Health
PFAS EPA MCLs Explained: What 4.0 ppt Means for Drinking Water
A units-first decode of EPA’s 2024 PFAS National Primary Drinking Water Regulation—MCL vs MCLG, Hazard Index math, and why 70 ppt is obsolete.
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