Kristen Sparrow • June 13, 2012
W.H.O. Declares Diesel Fumes Cause Lung Cancer
By DONALD G. McNEIL Jr.
Diesel fumes cause lung cancer, the World Health Organization declared Tuesday, and experts said they were more carcinogenic than secondhand cigarette smoke.
The W.H.O. decision, the first to elevate diesel to the “known carcinogen” level, may eventually affect some American workers who are heavily exposed to exhaust. It is particularly relevant to poor countries, where trucks, generators, and farm and factory machinery routinely belch clouds of sooty smoke and fill the air with sulfurous particulates…
“I don’t think it’s bad to have a diesel car,” Dr. Brawley added. “I don’t think it’s good to breathe its exhaust. I’m not concerned about people who walk past a diesel vehicle, I’m a little concerned about people like toll collectors, and I’m very concerned about people like miners, who work where exhaust is concentrated.”
Dr. Silverman, chief of environmental epidemiology for the National Cancer Institute, said her study of 50 years of exposure to diesel fumes by 12,000 miners showed that nonsmoking miners who were heavily exposed to diesel fumes for years had seven times the normal lung cancer risk of nonsmokers.
The W.H.O. decision was announced Tuesday in Lyon, France, after a weeklong scientific meeting. It also said diesel exhaust was a possible cause of bladder cancer. Diesel exhaust now shares the W.H.O.’s Group 1 carcinogen status with smoking, asbestos, ultraviolet radiation, alcohol and other elements that pose cancer risks.