Scientists in Brazil have discovered microplastics in the olfactory bulbs of human cadavers, highlighting concerns about how these particles enter and affect the brain.
Kaitlin Sullivan reports for NBC News.
In short:
- Researchers found microplastics in the olfactory bulbs of eight out of 15 cadavers, which may indicate these particles can enter the brain.
- The study found microplastics ranging from 5.5 to 26.4 micrometers, with the most common types being polypropylene and polyamide.
- Although it's unclear if microplastics affect cognitive regions, researchers suspect the bloodstream may also carry them to the brain.
Key quote:
“We know the place we are most exposed to particles is indoors, because all of our homes are full of plastic.”
— Dr. Thais Mauad, associate professor of pathology at the University of São Paulo Medical School in Brazil
Why this matters:
Microplastics have been found throughout the body, raising concerns about their long-term health impacts. Exposure to these particles, especially in the brain, may be linked to diseases like dementia or other neurological conditions.
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