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The issue as to whether exposure to diesel engine exhausts presents an increased risk of lung cancer was discussed, based on a review of 14 case/control studies. Four studies examining the effects of long term exposure to diesel exhausts found an increased risk for lung cancer after 20 years of exposure. Two of these studies used the same cohort, railroad workers. Less than 20 years exposure to diesel exhausts was not associated with an increased lung cancer risk. Four studies found no statistically significant associations. The remaining six studies produced inconclusive results. These studies had been conducted in truck drivers or bus garage mechanics. The author concludes that the existing epidemiological evidence is not sufficient to establish diesel engine exhausts as a human lung carcinogen.
Environmental Health Perspectives, 103(9):812-818, 1995. (77 references)
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