Source:
CNNAmericans are living longer because the air they breathe is getting cleaner, a new study suggests. The average drop in pollution seen across 51 metropolitan areas between 1980 and 2000 appears to have added nearly five more months to people's lives, according to a study published Wednesday in The New England Journal of Medicine.
Residents of cities that did the best job cleaning up air pollution showed the biggest jump in life span; for example, Pittsburgh's clearer air meant people there could expect to live nearly
10 months longer.They plotted pollution data for 1979-1983 against 1978-1982 life expectancies for 217 counties within 51 metropolitan areas around the country. Then they compared 1999-2000 pollution data with 1997-2001 life expectancies. Finally, they looked at how changes in life expectancy related to changes in air pollution for both time periods.
Bert Brunekreef, Ph.D. , director of the Institute for Risk Assessment Sciences at the University of Utrecht in the Netherlands, said the current study could help encourage government and industry to address air pollution in parts of the world where it is a serious threat to health. "Showing public health benefits of changes in pollution is a strong message, comparable to studies documenting health benefits of smoking bans," he said via email.
According to the Environmental Protection Agency, particulate matter 2.5 microns in size declined in the United States by an average of 11 percent between 2000 and 2007.
Read more:
http://www.cnn.com/2009/HEALTH/01/21/healthmag.airpollution.lifespan/
NBC Nightly News reported on this too