Reacción a "A study claims that patients who have suffered a heart attack have higher levels of micro- and nanoplastics in their blood"

The key question is whether the study detected plastics or whether it detected molecules that look like plastics. Microplastics are notoriously challenging to measure in human blood, and based on recently published confidence levels, the results presented are presumptive of the presence of plastics at best.

While the authors are to be commended for their efforts to control contamination, the study ignores findings that show that the pyrolysis gas chromatography mass spectrometry method used to quantify "nano- and microplastics (NMPs)" is not suitable for polyethylene and polyvinyl chloride, two of the main plastics detected. It is just as plausible that endogenous lipids in the blood are being misidentified as plastics. The headline could just as well read 'Patients who suffer heart attacks have more lipids in their blood’.