Microplastics found in arteries raise concerns over risk of heart attack

Microplastics and even nanoplastics, which we can’t see with the naked eye, have become rampantly available in our surroundings and bodies.

Scientists have reported the existence of microplastics in the blood but the potential health risks have always shown limited knowledge.

Researchers have issued a warning about the dangers of plastic pollution after discovering a higher risk of stroke and heart attack with plastic particles in their blood vessels.

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In a study, published in the New England Journal of Medicine, conducted in Naples, researchers found that more than half of the fatty plaques removed from patients’ blood vessels were contaminated with tiny particles of plastic like polyethylene or polyvinyl chloride (PVC).

Those with plastic in their plaques were nearly five times more likely to suffer from stroke, heart attack, or death over the next 34 months compared to those without plastic pollution.

While the study doesn’t prove that plastic particles directly cause strokes and heart attacks, there’s evidence from animal studies and human cells suggesting a possible link.

Dr Raffaele Marfella, the lead author of the study, said that there’s an urgent need for prevention by reducing plastic production. He pointed out that even if we manage to reduce plastic pollution significantly, it will take time to see the health benefits.

The research was prompted by a rise in strokes and heart attacks in patients who were typically considered low-risk.

The study analysed plaques removed from patients with atherosclerosis, a condition where plaque builds up in the arteries, increasing the risk of stroke.

Tests on the plaques revealed the presence of plastic particles, mostly less than a thousandth of a millimetre across.

Patients with plastic particles in their plaques were more likely to have cardiovascular issues.

Marfella stressed the importance of raising awareness about the risks of plastic pollution and urged governments to take action to protect both human health and the environment.

Further research is needed to confirm the role of plastic pollution in cardiovascular diseases, but scientists highlight the need for greater attention to the impact of microplastics and nanoplastics on human health.