Long-term exposure to fine particle pollution quietly scars heart muscle, MRI scans reveal, laying the groundwork for future heart failure. Canadian researchers found even “safe” levels of PM2.5 boosted myocardial fibrosis in both healthy volunteers and cardiomyopathy patients, especially women, smokers, and people with hypertension. Air Pollution’s Hidden Cardiac Scars Breathing polluted air could be […]



Summary

A study reveals long-term exposure to fine particulate matter (PM2.5) silently scars heart muscle, increasing the risk of future heart failure. Canadian researchers used MRI scans to find that even “safe” PM2.5 levels can cause myocardial fibrosis in both healthy individuals and those with cardiomyopathy. The effect was amplified in women, smokers, and individuals with high blood pressure. This silent scarring highlights the danger of air pollution’s impact on cardiovascular health, suggesting that current safety standards may not adequately protect vulnerable populations.

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