Tweens and Teens Are Breathing Easier in One of the Most Polluted U.S. Cities

March 8, 2015 2:37 AM

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Tweens and Teens Are Breathing Easier in One of the Most Polluted U.S. Cities

Los Angeles still tops the list for highest levels of ozone of any American city, and it has the worst smog and third-highest fine particular pollution. But the city has also managed to reduce those levels significantly in recent years, and that’s helping children breathe easier today, according to the results of a 20-year study.

Children ages 11 to 15 growing up in the last decade in the L.A area showed 10 percent increase in lung function compared with children growing up there during the 1990s, according to the study, published in The New England Journal of Medicine this week. The 2,000 children in the study showed improv...

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