Lithium Orotate — The Neuroprotective Trace Mineral
Lithium is a naturally occurring alkali metal found in trace amounts in drinking water and certain foods. At microdose levels (1–5 mg/day as lithium orotate), it has demonstrated neuroprotective, mood-stabilising, and potential longevity-extending effects distinct from the high-dose pharmaceutical lithium carbonate used in bipolar disorder. Epidemiological studies show inverse correlations between lithium in drinking water and suicide, dementia, and all-cause mortality rates.
Mechanism of Action
Lithium inhibits GSK-3β (glycogen synthase kinase 3 beta), a kinase involved in tau phosphorylation (Alzheimer's), neuronal apoptosis, and inflammation. GSK-3β inhibition activates Wnt/β-catenin signalling, promoting neurogenesis and neuroprotection. Lithium also increases BDNF, reduces amyloid-β production, and has been shown to extend lifespan in C. elegans and Drosophila.
Human Trial Evidence
A 2011 British Journal of Psychiatry ecological study of 18 Japanese municipalities showed lithium in drinking water was inversely correlated with all-cause mortality. A 2017 JAMA Psychiatry study showed lithium in drinking water was inversely associated with dementia rates across 151 Danish municipalities. A 2020 Alzheimer's & Dementia RCT showed microdose lithium (300 μg/day) stabilised cognitive function in mild Alzheimer's patients over 15 months.
Dosing Protocol
1–5 mg/day of lithium orotate (providing 0.13–0.65 mg elemental lithium). This is 100–1,000× lower than psychiatric doses. Best taken with food. Lithium orotate may have better bioavailability than lithium carbonate. Monitor thyroid function with long-term use (lithium can affect thyroid at any dose).
Safety & Contraindications
At microdose levels, lithium orotate is generally well-tolerated. Theoretical concerns about thyroid and kidney effects at any dose — monitor with long-term use. Not for use in pregnancy (teratogenic at high doses). Caution with NSAIDs and ACE inhibitors (increase lithium levels). Avoid dehydration.