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  Gasoline Soot in Air Increases Heart Risk A study published February 1, 2007 in the New England Journal of Medicine found that air polluted by soot can increase the risk of cardiovascular death by 150 percent. This is nearly the same impact as being an active smoker. The study focused on the most deadly kind of soot – fine particulate matter – which results from burning fossil fuels such as gasoline, diesel fuel and coal, The Wall Street Journal reported February 1.Cities with the highest soot levels are Pittsburgh, Riverside-San Bernardino, Cincinnati, Bakersfield, and Birmingham, with outdoor fine particulate matter levels of 19.6 micrograms per cubic meter or higher. In addition, large population centers like New York City, Washington, DC; Houston, and many other cities in the U.S. have levels of 15 or higher. Each increase of fine soot levels by 10 micrograms is associated with a 76 percent increased risk of cardiovascular death. Some of the lowest soot levels in the nation are found in Honolulu, with a level of 5; Albuquerque; 8.1, and Reno, 9.
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