Cleaner air means Americans live longer
The cleaner the air - the longer you will live - makes sense right?
Well in over 51 US cities, reduced air pollution over a period of twenty years, has added five months to the average persons' life expectancy.
This study was conducted at the Birgham Young University and the Harvard School of Public Health.
Sounds kind of obvious though doesn't it?
The study took place from 1980 to 2000 and most residents were living about 2.72 years longer by the end of that period. About 15 percent of that increase was due to a better air quality.
In some of the most polluted cities, such as Los Angeles and Houston, cleaner air added about 10 months to an average person's life.
"Such a significant increase in life expectancy attributable to reducing air pollution is remarkable," said C. Arden Pope III, a BYU epidemiologist and lead author of the study, which is published in the Jan. 22 issue of the New England Journal of Medicine.
"We find that we're getting a substantial return on our investments in improving our air quality," he said. "Not only are we getting cleaner air that improves our environment, but it is improving our public health."
The latest study evaluated the impact of decreases in particulate air pollution known as PM2.5 — tiny pollutants smaller than 2.5 microns in diameter, or smaller than 4/100ths of the width of a human hair.