---
title: "NEJM Carotid Plaque Microplastics Study: 4.5x Cardiovascular Risk & Capsule Audit (NEJM MNPs Plaque Trial Audit) | Nutrition Research Labs"
source_url: "https://nutritionresearchlabs.com/studies/microplastics-nanoplastics-carotid-artery-plaque-nejm-study"
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description: "Clinical audit of NEJM MNPs Plaque Trial (PMID: 38446676, 304 patients undergoing carotid endarterectomy for severe atherosclerosis): Polyethylene was detected"
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> **Canonical Source:** [https://nutritionresearchlabs.com/studies/microplastics-nanoplastics-carotid-artery-plaque-nejm-study](https://nutritionresearchlabs.com/studies/microplastics-nanoplastics-carotid-artery-plaque-nejm-study)
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> *Clinical audit of NEJM MNPs Plaque Trial (PMID: 38446676, 304 patients undergoing carotid endarterectomy for severe atherosclerosis): Polyethylene was detected*

## Media Hype vs. Absolute Clinical Reality (Information Gain Audit)

- **Viral Headline Claim:**
- **True Placebo-Adjusted Absolute Outcome:** Polyethylene was detected in 150 of 257 carotid plaques (58.4%) and polyvinyl chloride (PVC) in 31 plaques (12.1%). Patients with MNPs in plaques had a 4.53-fold higher risk of heart attack, stroke, or all-cause death over 34 months.
- **Relative vs. Absolute Statistical Breakdown:** The 4.5x hazard ratio is massive, but this is an observational study of individuals with advanced atherosclerotic disease requiring surgery. Plaque inflammation markers (IL-6, TNF-alpha) were markedly higher in plastic-containing plaques, suggesting MNPs may accelerate local plaque instability.
- **Funding & Sponsor Audit:** Italian Ministry of University and Research & European Union Horizon 2020 (Independent Academic / NIH)
- **Human Equivalent Dosing Protocol:** Avoid plastic-wrapped supplements, phthalate enteric coatings, and hot liquids in single-use plastic containers.

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