Summary
The October 2024 ATSDR Toxicological Profile for Mercury is the current US comprehensive synthesis covering elemental mercury (Hg⁰), inorganic mercury salts, and methylmercury (the dominant species in seafood). Each species has distinct toxicity profiles: elemental mercury vapor is primarily a neurotoxicant via inhalation (occupational exposure, dental amalgam); inorganic mercury salts are primarily nephrotoxic via oral exposure; methylmercury is the dominant developmental neurotoxicant relevant to dietary risk through fish and seafood consumption. ATSDR derives MRLs separately for each species and route in this profile.
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Update history
The five most recent substantive edits to this page, classified major (evidence or structure moved), correction (a published value or statement was wrong and has been fixed), or minor (narrative rewritten without changing the underlying evidence). Each description is derived from what the edit did to this page; the linked commit is the authoritative record, routine regeneration passes are excluded, and the full version history lives in git. When DOI minting comes online (see schema docs), each entry below will also link to a version-pinned DataCite DOI.
| Commit | Date | Change | Description |
|---|---|---|---|
| a8052bb | 2026-08-09 | major | 3 sections added; narrative text revised |