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Lead Exposure May Trigger Alzheimer's Through Gene Changes
NonToxCo Research
Science & Safety Team · 4/8/2026
Lead exposure changes how your genes work, and those changes may increase your risk of Alzheimer's disease, especially if you carry the APOE ε4 gene.
Lead, Genes, and Alzheimer's
A 2026 study found that sex and APOE ε4 allele status shape how lead exposure affects behavior and epigenetics. The study reveals gene-environment interactions where lead exposure triggers epigenetic changes (alterations in gene expression without DNA mutations) that increase Alzheimer's susceptibility.
What You Can Do
Test your water for lead. Replace old pipes. Keep older homes dust-free. Browse non-toxic home essentials for lead-free products.
Source: Authors (2026).