Microplastics have reached human brains, researchers declare global emergency

The thriving body of scientific evidence states that microplastics are collecting in various human organs, which can even be observed in the brain. Top scholars and researchers have declared this an emergency, calling for action to control plastic pollution.

Studies show tiny plastic particles are present in the lungs, placentas, reproductive organs, livers, kidneys, knee and elbow joints, blood vessels, and bone marrow.

Sedat Gündoğdu, who studies microplastics at Cukurova University in Turkey, said, “It is now imperative to declare a global emergency to deal with plastic pollution.”

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Fragments smaller than 5mm in diameter are known as microplastics. Recent studies suggest that these can lead to various health problems such as oxidative stress, which can cause cell damage and inflammation, and cardiovascular disease.

Matthew Campen from the University of New Mexico says

In observed animal studies linked to microplastics show they can lead to fertility issues, various cancers, endocrine and immune system problems, and impaired learning and memory.

At present, there are no governmental measures for plastic particles in food or water in the United States. The Environmental Protection Agency is focused on forming guidelines and provisions for this and has been giving grants since 2018 to identify new ways to detect and quantify them.

The presence of microplastics in human organs is alarming for human health. Studies of health effects in animals are already underway, and research is being conducted on human cells in the lab, known as epidemiological studies.

Bethanie Carney Almroth, an ecotoxicologist at the University of Gothenburg in Sweden, says, “It’s scary, I’d say.”

The brain is one of the most plastic-polluted tissues

The latest study to develop says, but still under review, posted online by the National Institutes of Health, shows that in the examination of every organ in the body, all contain microplastics. When the researchers scanned up to 91 brain samples, they found almost 10 to 20 times more microplastics than in any other organ.

It has been discovered that 24 of the brain samples collected in early 2024 have about 0.5% plastic by weight.

“It’s pretty alarming,” Campen said. “There’s much more plastic in our brains than I ever would have imagined or been comfortable with.”

It was determined that the brain is one of the most plastic-polluted tissues yet sampled.

The paper also found that the percentage of microplastics present in the brain has increased by up to 50%.