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Invited Commentary
Feb 13, 2012

Can What You Breathe Trigger a Stroke Within Hours?Comment on “Ambient Air Pollution and the Risk of Acute Ischemic Stroke”

Author Affiliations

Author Affiliations: Division of Cardiovascular Medicine, University of Michigan, Ann Arbor (Dr Brook); Dorothy M. Davis Heart and Lung Research Institute, Ohio State University Medical Center, Columbus (Dr Rajagopalan).

Arch Intern Med. 2012;172(3):235-236. doi:10.1001/archinternmed.2011.1214

Air pollution is a pervasive consequence of modern societies. Beyond being an environmental hazard, several pollutants such as particulate matter (PM) pose significant health threats.1 Fine PM (<2.5 μm in diameter; PM2.5) is a heterogeneous mixture of compounds (eg, carbon, sulfates, nitrates, and metals) principally derived from the combustion of fossil fuels. Given the billions of people exposed, the adverse effects of PM represent a major global health epidemic.2