FeaturedGeneral News

Study finds rising plastic particles in human brain, liver

Tiny plastic particles are accumulating in human tissues at increasingly higher levels, a new study published in the journal Nature Medicine showed.

The study, led by Matthew Campen of the University of New Mexico, shows that there are significantly higher levels of plastic nano- and microparticles in the liver and brain.

The research was carried out on deceased people in 2024 compared to those studied in 2016.

According to the study released on Tuesday, the contamination is particularly high in the brain, with levels up to 30 times higher than in other organs such as the liver or kidneys.

It said that while microplastics have previously been detected in organs like the lungs, intestines, and even the placenta, conventional microscopy typically only identifies particles larger than five micrometers.

The authors of the study said this excluded smaller nanoparticles that may be present.

A micrometer is a thousandth of a millimeter, and a nanometer is a millionth of a millimeter.

Campen’s team employed advanced infrared and electron microscopy, which has allowed them to detect these smaller particles with greater accuracy.

The researchers analyzed tissue samples from 24 deceased individuals in 2024 and compared them with 28 samples from 2016.

While the levels of plastic nano and micro particles in the kidneys remained largely unchanged, the liver and brain showed increases, particularly high levels in people with dementia

The study also identified alarming levels of microplastics in the brains of people diagnosed with dementia.

Twelve (12) brain samples were collected between 2019 and 2024, containing between 12,000 and 48,000 micrograms of plastic per gram of tissue.

However, the researchers said that these findings are associative and do not establish a direct cause-and-effect relationship.

The team also analyzed the types of plastic found, with polyethylene, the plastic commonly used in bottles and packaging, found to be the most prevalent.

It accounted for 40 to 65 percent of the plastic detected in the liver and kidneys, and up to 75 percent in the brain.

The researchers caution that some of the differences observed in brain tissue could be attributed to geographic factors, as the samples were collected from New Mexico and the U.S. East Coast.

They stressed the need for larger-scale, longer-term studies to further explore the effects of micro- and nanoplastic accumulation, particularly on neurological health. (dpa/NAN)

Related Articles

Back to top button
error: Content is protected !!
Verified by MonsterInsights