Associations between low-dose drinking water lithium exposure and Dementia: A nationwide U.S. ecological study

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• Dementia rates appear lower in areas with higher lithium exposure in drinking water, suggesting a possible protective effect.
• The study found a significant association with dementia rates, showing areas with increased lithium had up to 25% lower rates.
• Observational analysis across various U.S. states revealed patterns linking lithium exposure to dementia incidence.
• Findings highlight the potential benefits of lithium but require further investigation into safety and effects at low doses.