Breathing smog increases asthma risks

LOS ANGELES The eight-year study of 217 non-asthmatic children in the region found that those who breathed high amounts of nitrogen dioxide, found in smog generated by traffic, were more likely to develop asthma.

"This study underlines the need for clean air, giving us the benefits of a fully healthy population," said Mary D. Nichols, chair of the Air Resources Board. "Good air quality is fundamental to good health."

The study was published in the journal Environmental Health Perspectives.

City News Service contributed to this story.

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