Air Pollution Causes Heart Damage

A significant study published in Radiology by the Radiological Society of North America, led by Kate Hanneman of the University of Toronto, found that long-term exposure to even moderate levels of air pollution is associated with more advanced coronary artery disease. The research, which analyzed data from over 11,000 adults in Canada — Toronto, linked exposure to fine particulate matter (PM2.5) and nitrogen dioxide (NO2) with increased calcium build-up, plaque burden, and obstructive disease in coronary arteries. The findings suggest that current air quality standards, including those in Canada, may not be fully protective and that air pollution should be considered a modifiable cardiovascular risk factor alongside blood pressure, cholesterol, and smoking. The World Health Organization highlights air pollution as a leading environmental risk factor for cardiovascular disease globally. The study emphasizes the need for prevention through policy, urban planning, and personal decisions, noting the connection between air pollution and climate change.