Plastic Particles Found in Artery-Clogging Plaque Linked to Vascular Issues
A recent study presented at the American Heart Association’s Vascular Discovery 2025 Scientific Sessions shed light on the presence of tiny plastic particles in the blood vessels of individuals with plaque buildup. The research, conducted by vascular surgeon-scientist Ross Clark, M.D., M.B.A., R.P.V.I., from the University of New Mexico, revealed a significant increase in micronanoplastics in the arteries of people who had experienced a stroke, mini-stroke, or temporary vision loss due to clogged blood vessels.
Micronanoplastics are minuscule plastic fragments formed through industrial processes or the degradation of larger plastic items in the environment. These particles, ranging from micro to nano sizes, can easily disperse and infiltrate cells and tissues in living organisms. While microplastics are visible to the naked eye, nanoplastics are microscopic and pose a greater risk of bioaccumulation in the food chain.
Contrary to popular belief, the study found that the main source of micronanoplastics in the human body is not plastic utensils or packaging, but rather the food and water consumed. Over time, these particles accumulate in the body, potentially leading to adverse health effects.
Previous research in Italy had already identified micronanoplastics in the plaque of individuals undergoing surgery for carotid artery blockage. The presence of these particles was associated with a higher risk of mortality, heart attack, or stroke in the years following the procedure.
The recent study, although limited in sample size, compared the levels of micronanoplastics in the carotid arteries of individuals with healthy arteries, plaque without symptoms, and plaque-related symptoms. The analysis revealed significantly higher concentrations of micronanoplastics in individuals experiencing vascular issues, highlighting a potential link between plastic exposure and cardiovascular health.
Despite the promising findings, the study has its limitations. It cannot definitively prove causation between micronanoplastics and arterial symptoms, and the technique used to measure plastic in biological samples may have inherent flaws. Further research is necessary to fully understand the biological effects of these particles on vascular health.
The implications of this study are profound, as it introduces plastic exposure as a potential modifiable risk factor for vascular diseases like stroke. Understanding the mechanisms by which micronanoplastics impact arterial health could pave the way for novel stroke prevention strategies.
As the scientific community delves deeper into this emerging field of research, it is essential to approach the topic with caution and continue refining methodologies to accurately assess the impact of plastic particles on human health. The study opens up new avenues for investigating the role of environmental factors in cardiovascular diseases and underscores the importance of sustainable practices to mitigate plastic pollution in our environment.
