Study warns even moderate levels of air pollution causes heart damage
Researchers found 11,128 adults with higher long-term PM2.5 exposure had more calcium buildup, plaque and artery narrowing.
- On Tuesday, a University of Toronto study published in the journal Radiology linked long-term, low-level air pollution exposure to advanced coronary artery disease. Senior author Dr. Kate Hanneman led the analysis of 11,128 adults.
- For every one microgram increase in long-term PM2.5 exposure, participants faced an 11% increase in calcium build-up, 13% greater odds of plaque, and 23% greater odds of obstructive disease. Nitrogen dioxide showed similar trends with smaller effect sizes.
- The World Health Organization identifies air pollution as the leading environmental risk factor for heart disease, contributing to around 2.5 million cardiovascular deaths annually. Tiny PM2.5 particles, roughly 30 times smaller than a human hair, penetrate deep into the bloodstream.
- Dr. Hanneman noted that these findings suggest current Canadian Ambient Air Quality Standards may not be fully protective, as participants experienced harm despite exposure levels falling well below existing regulatory thresholds.
- Hanneman suggested that policy changes to reduce air pollution could deliver simultaneous benefits for cardiovascular health and the climate, since fossil fuel combustion drives both environmental contamination and greenhouse gas emissions.
35 Articles
35 Articles
Moderate air pollution associated with advanced coronary artery disease
In one of the largest studies to date, researchers examined the relationship between long-term air pollution exposure and coronary atherosclerosis and found that even at moderate levels, long-term exposure to air pollution is associated with more advanced coronary artery disease.
How does air pollution affect heart plaque risk?
Study links long term PM2.5 exposure to coronary damage Research summarized in the feed reports a dose response relationship between long term air pollution exposure and heart pathology. For each increase in long term PM2.5 of 1 microgram per cubic meter , the study found higher risk markers in…
Exposure to Moderate Air Pollution Raises Cardiovascular Disease Risk
Research from the University of Toronto shows long-term exposure to moderate air pollution increases a person’s risk of fatty build up in the blood vessels of the heart, which can lead to serious cardiovascular events like heart attack. As reported in the journal Radiology, the study also showed that women were particularly badly affected and had an 81% increased risk for obstructive coronary artery disease if exposed to long-term air pollution.…
Coverage Details
Bias Distribution
- 65% of the sources are Center
Factuality
To view factuality data please Upgrade to Premium
