More microplastics research. Cardiac event patients in the hospital volunteered their plaque to be tested. It was on average 2% microplastics (which may be acting as a scaffold for plaque to some extent). In 36 months, they had a 4x chance of death (cardiac, stroke, etc) when they had plastics versus when they didn't.
It appears microplastics which are in blood etc touch cells, triggering an immune response which results in adverse health conditions.