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Home / Science / Microplastics Found in Human Brains in Increasing Quantities

Microplastics Found in Human Brains in Increasing Quantities

Microplastics Found in Human Brains in Increasing Quantities
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Science February 4, 2025 08:27

antwerp, belgium - Recent American research reveals the presence of microplastics in human brains, with higher concentrations in dementia cases.

Microplastics Detected in Human Brains

American researchers analyzing brain tissue from deceased individuals found significant amounts of microplastics, particularly in the brains of those with dementia. The study, comparing autopsies conducted between 1997 and 2024, suggests that the human brain may contain several grams of microplastics, raising concerns about the potential health impacts.

Although microplastics were also found in the liver and kidneys of the subjects, the concentrations were considerably lower than those in the brain. The researchers speculate that the brain may be more susceptible to microplastic accumulation, given the smaller sizes of these plastic particles.

The study highlights a worrying trend, with deceased individuals in 2024 showing up to fifty percent more microplastics in their brains compared to those who died in earlier years. This increase is believed to be linked to the growing use and production of plastics, which release microplastics into the environment through various means such as tire wear and littering.

Furthermore, the most common type of plastic detected in the brains was polyethylene, commonly used in food and beverage packaging. The researchers utilized a new method to analyze the chemical composition of the particles, revealing approximately 4,800 micrograms of plastics per gram of brain tissue.

Lead researcher Matthew Campen likened the amount of microplastics in the human brain to that of a standard plastic spoon or even a small Lego block, highlighting that around half a percent of the brain may consist of plastic. However, Campen acknowledges the uncertainty surrounding these findings and plans to refine the methodology in the coming year.

Despite the increasing presence of microplastics in human bodies, the exact health implications remain unclear due to the ubiquitous nature of these particles. The study emphasizes the challenge of assessing the health impact of microplastics, especially in the absence of a control group completely free from microplastic exposure.

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