Microplastics are everywhere—in the air we breathe, the food we eat, and the water we drink. But new research from Peking University in Beijing suggests these tiny plastic particles may pose a serious health risk.
Scientists have discovered that microplastics can travel through the bloodstream and block blood flow in the brain—at least in mice. Could the same be happening in humans?
Microplastics Are Now Inside Us
Studies estimate that the average person ingests and inhales around 50,000 microplastic particles per year. These fragments come from clothing, food packaging, furniture, and even the air.
Plastic Particles Can Penetrate Deep Into the Body
Once inside the body, microplastics don’t just pass through—they accumulate. Some are expelled, but smaller particles can remain in tissues and organs for extended periods.
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Scientists Have Found Microplastics in Vital Organs
Research has detected microplastic particles in human lungs, liver, kidneys, and even in unborn babies. The long-term health effects remain unclear, but many plastics contain hormone-disrupting and potentially cancer-causing chemicals.
Microplastics Can Reach the Brain
In a groundbreaking study, researchers gave mice fluorescent microplastic particles in their drinking water and tracked their movement through the body. What they found was alarming.
Plastic Particles Can Block Blood Flow in the Brain
Once microplastics entered the bloodstream, they were consumed by immune cells, which then accumulated in the brain’s small blood vessels, creating tiny blockages. This reduced blood circulation and impaired the mice’s ability to move naturally for days.
The Blockages Mimic Blood Clots
The scientists described the effect as similar to a traffic accident in the bloodstream. These tiny plastic-induced clots functioned like mini-strokes, affecting blood supply to the brain.
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Could This Be Happening in Humans?
Microplastics have already been found in human brain tissue, but scientists are still unsure how they get there—or what their full impact might be.
Potential Links to Heart Disease and Stroke
A 2024 study found that people with microplastic particles in their main arteries were more likely to experience heart attacks or strokes. While the link is not fully understood, it raises serious concerns about the cardiovascular effects of plastic pollution.
Reducing Microplastic Exposure Is Difficult
Since microplastics come from everyday items, completely avoiding them is nearly impossible. However, limiting exposure by filtering drinking water, reducing plastic use, and avoiding synthetic fabrics may help lower intake.
Scientists Urge Further Research
Despite these concerning findings, researchers emphasize that we still don’t fully understand how microplastics affect human health. The new imaging technology used in this study could help scientists track and analyze microplastic exposure in humans in the future.
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The article is based on information Illustreret Videnskab
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