15 Feb 2012:
Short-term Exposure to Pollutants
Increases Heart Attack Risk, Study Says
A new report says that even short-term exposure to major air pollutants increases the risk of heart attack
. In an analysis of more than 100 studies conducted worldwide, researchers from the Paris Cardiovascular Research Center found that increased exposure to pollutants — including fine particles, coarse particles, nitrogen dioxide, carbon monoxide, and sulfur dioxide — consistently increased the health risks after even short-term exposure, or less than seven days. While the risk from pollutant exposure was relatively small, compared with factors such as high blood pressure, the number of people breathing these pollutants worldwide is so large that a sizable number of people are at risk, the study said. In the case of fine particles, the researchers found that heart attacks increased 2.5 percent for every incremental increase in pollution levels. In other words, if fine particle levels reached 10 micrograms per cubic meter in one city, and 20 micrograms in another, the rate of heart attacks would be 2.5 percent greater in the second city, according to the study, published in the Journal of the American Medical Association
. Most of the pollutants are associated with the burning of fossil fuels for transportation or industry. In a separate study, MIT researchers found that air pollution associated with China’s steep industrial growth caused health care costs to jump from $22 billion in 1975 to $112 billion in 2005
Yale Environment 360 is
a publication of the
Yale School of Forestry
& Environmental Studies
e360 on Facebook
Donate to e360
View mobile site
Subscribe to our feed:
Yale Environment 360
articles are now available in Spanish and Portuguese on Universia
, the online educational network. Visit the site.
Business & Innovation
Policy & Politics
Pollution & Health
Science & Technology
Antarctica and the Arctic
Central & South America
A Yale Environment 360
video explores Ecuador’s threatened Yasuni Biosphere Reserve with scientists inventorying its stunning forests and wildlife. Watch the video.
is now available for mobile devices at e360.yale.edu/mobile
The Warriors of Qiugang
, a Yale Environment 360
video that chronicles the story of a Chinese village’s fight against a polluting chemical plant, was nominated for a 2011 Academy Award for Best Documentary (Short Subject).
Watch the video.
Top Image: aerial view of Iceland
. © Google & TerraMetrics.
In a Yale Environment 360
video, photographer Pete McBride documents how increasing water demands have transformed the Colorado River, the lifeblood of the arid Southwest. Watch the video.