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Beijing's Olympic Smog Shows Pollution's Effect on Health



TUESDAY, May 15 (HealthDay News) -- With the 2012 Olympics set to begin in London this summer, a new study on air quality during the 2008 Beijing Olympics delivers an important public health message: Reducing air pollution levels could lower the risk of heart trouble for many.
Four years ago, an international team of researchers took advantage of changes in air quality surrounding the 2008 Olympics, to see what health effects those changes might bring. The Chinese government had agreed to limit the use of motor vehicles and the operating hours of power plants in an effort to lower air pollution levels during the games. Once the international sporting event, and the accompanying restrictions, had ended, air pollution levels rebounded.
In the months before, during and after the 2008 Olympics, the researchers took measurements from 125 medical residents in Beijing, tracking their blood pressure and various biomarkers associated with heart disease. They found that rising air pollution levels drove up blood pressure and blood-clotting factors in the otherwise healthy medical residents.

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