Reuters: Cleaner air equals longer lives: study
Reducing fine particles given off by automobiles, diesel engines, steel mills and coal-fired power plants have added as much as 15 percent of the 2.72 years of extra longevity seen in the United States since the early 1980s, they wrote in the New England Journal of Medicine.
Changes in smoking habits are the biggest reason why Americans are living longer, said Arden Pope, an epidemiologist at Brigham Young University in Utah who led the study.
Improved socioeconomic conditions, judged partly by the proportion of high school graduates living in an area, rank next. But cleaner air was a big factor.
"It's stunning that the air pollution effect seems to be as robust as it is after controlling for these other things," Pope said in a telephone interview. …
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