Microplastics Identified in Human Artery Plaques
A 2024 study linked the presence of plastics in carotid artery plaques to a significantly higher risk of cardiovascular events.
Updated on Sept. 28, 2026 in Heart Disease
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Researchers discovered microplastics and nanoplastics, specifically polyethylene and polyvinyl chloride, within human carotid artery plaques removed during surgery. Patients with these plastic particles faced a 20% rate of heart attack, stroke, or death, compared to 7.5% in those without them.
Why it matters
The study suggests a potential link between plastic exposure and serious cardiovascular outcomes, with a calculated hazard ratio of 4.53 for adverse events. These findings highlight the need for larger studies to determine if these particles actively contribute to the development of cardiovascular disease.
A study of 257 surgical patients found polyethylene in 58.4% of plaques and polyvinyl chloride in 12.1%. The hazard ratio for combined cardiovascular outcomes was 4.53 for those with detected particles.
The details
Using mass spectrometry and electron microscopy, researchers identified plastic particles located inside plaque macrophages and surrounding debris. These samples were extracted from patients who previously underwent surgery for asymptomatic carotid artery disease.
Timeline
The initial study on microplastics in atheromas was published in 2024.
A clinical review concerning microplastic cardiovascular risks was published in 2025.
The current findings were published on September 28, 2026.
The Big Picture
This research builds upon the 2024 study on microplastics in atheromas by linking particle detection to long-term patient health outcomes. It underscores the transition from merely detecting synthetic materials in the body to investigating their specific physiological consequences.
The findings currently serve as a scientific observation rather than a change to immediate clinical diagnostic procedures. Future research will determine if this detection necessitates new screening protocols or lifestyle modifications for patients with carotid artery disease.
The takeaway
While the presence of microplastics in arterial plaque is a significant scientific discovery, researchers emphasize that more comprehensive studies are required to confirm causality. Understanding the long-term health impact of these particles remains a priority for the cardiovascular research community.
Further reading
Learn more about the latest developments in Heart Disease.
Source note: This article includes information reported by Medindia.
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