# Narration and storyboard draft: Microplastics and Cardiovascular Disease

Authored draft, approximately 60–90 seconds; no rendered video claimed.

Microplastics and PFAS are often discussed together, but they are different exposures. Plastic particles have been detected in blood, plaques and other cardiovascular samples. PFAS are chemicals whose serum concentration can be measured and, in some trials, reduced. Our review examined 59 relevant original reports. The strongest human particle study followed patients undergoing carotid surgery: plaque polymers predicted a composite of infarction, stroke or death from any cause. That prospective association is concerning, but it does not prove causation. Existing vascular disease, other exposures and contamination remain possible contributors. Animal and cell experiments show plausible injury, clotting, leakiness and inflammatory pathways, with important dose, sex and disease boundaries. Together this supports a Gamma grade for the real-world human particle-event claim: mechanistically plausible with partial system support. PFAS clinical-event evidence is separately graded as observational in this dossier. Donation and resin trials genuinely reduce selected serum PFAS, but lower concentration is not demonstrated clinical health improvement. None of the examined trials shows that removing a human plastic-particle burden prevents cardiovascular events. The next useful study would combine independently verified exposure reduction, repeated internal sampling, hard clinical outcomes and harms. The evidence does not justify treating every detection as disease causation or every detox claim as effective.

1. Show the exact claim, grade and confidence.
2. Show selected publication milestones; label experimental systems and clinical endpoints.
3. Contrast the strongest result with its source-specific limitation.
4. End with the boundary experiment and primary-source links.

Use authored schematics; do not depict Consensus meters as causal confidence or reproduce publisher graphics without appropriate permission.