NAPLES, Italy, July 24 (World Daily Times) — The immediate takeaway for most people is not that plastics have been proven to cause heart attacks. It is that tiny plastic particles are being detected in human blood, including in patients who had serious heart attacks, according to a study published in the European Heart Journal and summarized by the European Society of Cardiology.
That finding is worrying, but it is not the same as proof of cause. The study shows an association, not a confirmed reason why the heart attacks happened.
What did the study find?
The European Society of Cardiology said the study found micro- and nanoplastics in the blood of 84% of patients who had suffered a serious heart attack.
For comparison, the particles were detected in 40% of patients with chronic ischemic heart disease and in 32% of patients with normal coronary arteries, according to the study summary.
The research looked at 61 patients who were undergoing coronary angiography, a test doctors use to examine the heart’s blood vessels. The study also examined blood samples taken from the coronary arteries.
Researchers reported that patients in the heart-attack group had a greater variety of plastic types in their blood. Polyethylene was the most common type, appearing in 97% of positive samples, the study found.
What are microplastics and nanoplastics?
Microplastics are very small pieces of plastic. Nanoplastics are even smaller.
These particles can come from the breakdown of larger plastic items. Scientists have been finding them in water, air, food, and, in this study, blood.
Does this mean plastics cause heart attacks?
No. The study does not prove that the particles caused the heart attacks.
That matters because a link between two things is not the same as a cause. People with heart disease may differ from others in many ways, and the study itself was small, with 61 patients.
Why did smoking and air pollution come up?
The European Society of Cardiology said the study also found higher micro- and nanoplastic levels among smokers and among people exposed to higher long-term air pollution, measured as PM2.5.
The ESC said smokers were six times more likely to have microplastics in their blood. It also said every patient who both smoked and had higher air pollution exposure had plastics in their blood, compared with 12.5% of patients who did not smoke and were not exposed to higher levels of air pollution.
Those findings do not prove that smoking or air pollution caused the plastic particles to appear in blood. They do suggest that different exposures may cluster together, which is one reason researchers want larger studies.
What should readers take from this?
The study adds to a growing body of evidence that plastic pollution is not only an environmental issue. It may also be entering the human body in ways scientists are still trying to understand.
But the study does not show that plastics are a direct cause of heart attacks, and it does not provide a simple rule for judging any single product or daily habit. For now, the most accurate reading is cautious: the finding is real, the health meaning is still being worked out, and the science is not finished.
