Microplastic could enter brain just from breathing, scientists say 

Microplastics have been detected in the smell centre of the human brain for the first time, suggesting the actual quantity of these tiny particles deposited in the body might be much higher than was believed.
The study published on Monday in the journal JAMA Network Open revealed that eight out of 15 autopsied adults in Germany and Brazil had microplastic inside the brain’s olfactory bulb.
Researchers from the University of Sao Paulo in Brazil said the tiny plastic particles, now ubiquitous in the air, were likely breathed in by the deceased individuals over their lifetimes.
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