Heart attack patients have higher levels of microplastics in their blood, says study

6 min readUpdated: Jul 28, 2026 08:55 AM IST The findings suggest a strong association between the presence of tiny plastic particles in the bloodstream and acute heart attacks. (Photo/Canva)People who suffered a major heart attack had significantly higher levels of micro and nanoplastics (MNPs) in their blood than those with chronic coronary artery disease or even healthy coronary arteries, according to a new study published in the European Heart Journal. The findings suggest a strong association between the presence of tiny plastic particles in the bloodstream and acute heart attacks. Researchers also found that smokers and people exposed to higher levels of air pollution had greater concentrations of these particles in their blood. The study does not prove that microplastics directly ca