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American Focus > Blog > Health and Wellness > Scientists find more microplastics in human brains than in kidneys and livers—and levels are rising
Health and Wellness

Scientists find more microplastics in human brains than in kidneys and livers—and levels are rising

Last updated: February 4, 2025 4:48 am
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Scientists find more microplastics in human brains than in kidneys and livers—and levels are rising
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Plastic pollution has become a major global concern in recent years, with microplastics being found in various environmental and biological samples. A recent study published in Nature Medicine has shed light on the presence of microplastic particles in human brains, raising questions about the potential health implications of this disturbing finding.

The study conducted by researcher Matthew Campen and his team analyzed tissue samples from the liver, kidney, and brain of individuals who underwent autopsy in 2016 and 2024. What they found was alarming – the concentration of microplastic particles in the brain samples was significantly higher than in the liver and kidney tissues. Furthermore, brain samples from 2024 showed a marked increase in plastic particle levels compared to those from 2016, indicating a concerning trend of accumulation over time.

One of the most intriguing findings of the study was the association between microplastic accumulation in the brain and dementia. Individuals with a documented dementia diagnosis had higher concentrations of plastic particles in their brains than those without, suggesting a potential link between plastic exposure and neurodegenerative diseases. However, the researchers are quick to point out that this association does not prove causation and that further studies are needed to explore the long-term health effects of microplastic exposure.

The study also highlighted the limitations of current methods for detecting microplastics in human tissues. Most previous studies relied on visual microscopic spectroscopy, which can only identify particles larger than 5 micrometers. The use of novel analytical techniques in this study allowed for the detection of smaller nano-sized particles, providing a more comprehensive understanding of microplastic distribution in the body.

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While the implications of these findings are still unclear, they underscore the urgent need for more research on the health effects of microplastic exposure. The researchers emphasize the importance of conducting larger, more diverse studies to determine the extent of microplastic accumulation in the human body and its potential impact on health.

In conclusion, the presence of microplastics in the human brain is a troubling discovery that warrants further investigation. As plastic pollution continues to rise, understanding the effects of microplastic exposure on human health is crucial for developing effective strategies to mitigate this growing environmental threat.

TAGGED:BrainsfindhumankidneyslevelsliversandmicroplasticsRisingScientists
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