Abstract
Lung cancer risks from inhaling diesel exhaust particles were estimated by comparing their carcinogenic potencies with other substances that have been shown to cause cancer in humans. Authors estimate that the expected levels of exposure in congested urban areas could increase a person's lung cancer risk by a few percent, but that the overwhelming cause of lung cancer in a population will continue to be cigarette smoking. Overall, diesel-powered vehicles are expected to cause less than about 200 lung cancers per year in the U.S. population. However, the information currently available is insufficient to exclude the possibility that no lung cancer cases can be attributed to the emissions from light-duty diesel vehicles. (From authors' summary and conclusions)
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