Did the University of New Mexico study find microplastics in the brain?

Yes, researchers at the University of New Mexico found that microplastics were not only entering the brain but also accumulating there.

Are microplastics linked to Alzheimer's disease?

Some studies suggest a link, with mice exposed to microplastics showing signs of memory problems consistent with early-stage Alzheimer's.

How can I avoid microplastics in my food and drink?

Reducing consumption of highly processed foods and avoiding heating plastics (like cups or containers) when consuming food or drinks can help minimize exposure.

Home / Science / Microplastics Invade Human Brains

Microplastics Invade Human Brains

5 Jan

•

Summary

Microplastics are accumulating in human brains.
Newer brain samples show higher microplastic concentrations.
Microplastics linked to Alzheimer's and heart disease.

Microplastics have been detected accumulating within the human brain, with recent studies revealing higher concentrations in individuals who died in 2024 compared to those who passed away in 2016. Researchers examining brain samples dating back to 1997 observed a consistent trend of increasing microplastic levels over time, irrespective of the individual's age at death.

Emerging research suggests potential links between microplastic exposure and various diseases. Studies in 2025 indicated a connection to Alzheimer's disease, where mice exposed to polystyrene showed memory impairments. Additionally, individuals with dementia exhibited higher microplastic levels, although increased brain porosity in dementia patients is also noted as a factor.

Further investigations are exploring a correlation with heart disease, with one study finding that individuals with microplastics in a major artery faced a higher risk of cardiovascular events. The pervasive presence of microplastics in food and beverages, particularly those heated or highly processed, contributes to this growing public health concern.