The study linking microplastics to heart attacks is built on shaky ground — the sample size is too small for reliable conclusions, and the primary detection method produces false positives because lipid breakdown mimics plastic signals. Measured concentrations were so high they matched wastewater influent levels, strongly pointing to contamination from medical equipment during the procedure itself. Until these gaps are addressed, the alarm over microplastics and heart disease is getting way ahead of the actual evidence.