Exposure to lead and incidence of Alzheimer's disease and all-cause dementia in the United States https://alz-journals.onlinelibrary.wiley.com/doi/10.1002/alz.71075 "18% of new dementia cases in the United States each year may be linked to cumulative lead exposure" https://medicalxpress.com/news/2026-02-cumulative-exposure-linked-alzheimer-dementia.html