LONDON — What many commuters choking on smog have long suspected has been scientifically validated: Air pollution causes lung cancer.
The International Agency for Research on Cancer declared on Thursday that air pollution is a carcinogen, alongside known dangers such as asbestos, tobacco and ultraviolet radiation. The decision came after a consultation by an expert panel organized by IARC, the cancer agency of the World Health Organization, which is based in Lyon, France.
“The air most people breathe has become polluted with a complicated mixture of cancer-causing substances,” said Kurt Straif, head of the IARC department that evaluates carcinogens. He said the agency now considers pollution to be “the most important environmental carcinogen,” ahead of second-hand cigarette and cigar smoke.
The risk to the individual is low, but Straif said the main sources of pollution are widespread, including transportation, power plants, and industrial and agricultural emissions.
