Study Shows Link Between Ozone and Asthma

10 year-long USC study demonstrates ozone, found in smog, to cause asthma in children.

Published: 02-Feb-2002

SACRAMENTO, California, February 1, 2002 (ENS) - A decade long study of California children has produced the strongest evidence to date that ozone, found in smog, can cause asthma in children.

The study, funded by the California Environmental Protection Agency's Air Resources Board (ARB) and conducted by the University of Southern California (USC), concludes that children who compete in sports in communities with more heavily polluted air are more likely to be diagnosed with asthma than other children.

Children in communities with high average ozone levels who compete in three or more team sports have a three to four times higher risk of developing the respiratory illness than non-athletic kids, the researchers report in the February 2 issue of "The Lancet." The more sports children participate in, the greater the effect.

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