Microplastic accumulation in the brain noted in dementia patients. Causality uncertain but source of said plastics can come from microwaving food in plastic containers.

Medical Mythbusting Commentary for March 10, 2025

Source:
Doctor’s warning to microwave users after dementia discovery

Reference:
Human microplastic removal: what does the evidence tell us?
Bioaccumulation of microplastics in decedent human brains