Microplastics and Cardiovascular Disease: Should Clinicians Be Paying Attention?

Area of Science:

• Environmental Health
• Cardiology
• Toxicology

Background:

• Microplastics (MPs) are increasingly recognized environmental contaminants.
• Their presence and biological effects are a growing concern in human health.

Purpose of the Study:

• To introduce clinicians to the potential role of microplastics as a cardiovascular risk factor.
• To summarize current evidence linking microplastics to cardiovascular health.

Main Methods:

• Review of in vitro and animal studies on microplastic effects.
• Analysis of small human studies investigating microplastics in cardiovascular tissues and outcomes.
• Assessment of evidence limitations including confounding factors and analytical challenges.

Main Results:

• Microplastics have been detected in human cardiovascular tissues.
• In vitro and animal studies link MPs to oxidative stress, endothelial dysfunction, and inflammation.
• Small human studies show associations between MPs and cardiovascular outcomes, but these are associative and method-dependent.

Conclusions:

• Microplastics are pervasive and biologically plausible cardiovascular risk factors.
• Current human data is associative, requiring further rigorous investigation.
• Population-level pollution control is recommended; personal mitigation is premature for clinicians.