Micro-and Nano-Plastic Exposure as an Emerging Risk for Atherosclerotic Cardiovascular Disease

Area of Science:

• Environmental Health
• Cardiovascular Science
• Toxicology

Background:

• Micro- and nanoplastics (MNPs) are pervasive environmental contaminants.
• Growing concern exists regarding their potential health impacts, particularly on cardiovascular health.

Purpose of the Study:

• To review micro- and nanoplastic (MNP) exposure as an emerging risk factor for atherosclerotic cardiovascular disease (CVD).
• To explore how individual exposures, behaviors, and environmental factors contribute to internal dose and CVD risk.

Main Methods:

• Literature review of studies on MNP exposure pathways and cardiovascular implications.
• Analysis of biomonitoring and clinical evidence for MNP presence in human tissues.
• Examination of potential mechanisms linking MNP exposure to CVD.

Main Results:

• MNP exposure is continuous via inhalation, ingestion, and dermal contact, with significant dietary and indoor sources.
• Global disparities in exposure exist, disproportionately affecting low- and middle-income countries.
• MNPs are detected in human blood, vascular tissues, and atherosclerotic plaques, suggesting systemic exposure.
• MNP exposure may contribute to CVD through inflammation, oxidative stress, and endothelial dysfunction.

Conclusions:

• MNP exposure is a plausible contributor to cardiovascular disease, necessitating further research into causal links.
• Improved exposure assessment, prevention strategies, and policy interventions are crucial.
• Addressing global disparities in MNP exposure is essential.