Decoding the Cardiovascular Risks of PM2.5 Components: Insights from a Half-Million Chinese Adults Cohort Study

Study Background: The Cardiovascular Burden of Air Pollution

Particulate matter with diameters ≤2.5 micrometers (PM2.5) has long been recognized as an environmental risk factor for cardiovascular disease (CVD), a leading cause of morbidity and mortality worldwide. However, emerging evidence suggests that not all PM2.5 components exert equal harm. Differentiating the cardiovascular risks attributable to chemical constituents within PM2.5 could refine regulatory policies and interventions to reduce the global burden of CVD. China, with its substantial population and varying air pollution profiles, provides a crucial setting to advance understanding about how specific PM2.5 components influence incident cardiovascular disease.

Study Design and Methods