Overview
This 2012 Taiwanese animal study demonstrated dose-dependent aluminum accumulation and oxidative stress (measured as TBARS/lipid peroxidation) in multiple brain regions of neonatal rats. This is an animal toxicology study; it provides mechanistic support for Al neurotoxicity in early development but does not provide food or formula concentration data.
Key numbers
Brain Al concentrations after intraperitoneal AlCl3 (ng/g wet weight):
| Region | Control | High Al (35 mg/kg/day) | p |
|---|---|---|---|
| Hippocampus | 294.9 ± 180.8 | 751.0 ± 225.8 | <0.05 |
| Diencephalon | 20.4 ± 9.6 | 79.6 ± 20.7 | <0.05 |
| Cerebellum | 83.1 ± 15.2 | 144.8 ± 36.2 | <0.05 |
| Whole brain | — | 219.5 ± 43.1 | — |
TBARS (lipid peroxidation) increased significantly in hippocampus, diencephalon, cerebellum, and brain stem in the high-Al group.
Methods
Intraperitoneal AlCl3 injection PND3–17. AAS or ICP (not specified). Wet weight. Animal study; intraperitoneal route does not replicate oral dietary exposure. Dose of 35 mg Al/kg/day far exceeds human dietary exposure from formula (typically <7 mg/L Al in formula × consumption). Results support the mechanistic plausibility of Al neurotoxicity but cannot directly inform food safety thresholds.
Implications
Health: Provides mechanistic evidence for Al-induced oxidative stress and neural regional vulnerability in early development; supports precautionary concern about high Al in infant formula.
Certification: Cannot be used directly for HMT&C Al thresholds (animal, intraperitoneal route). Relevant to the biological plausibility section of Al toxicology pages.
Wiki pages updated on ingest
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 | 6 sections added; narrative text revised |