Emphysema is considered a smoker's disease. But it turns out, exposure to air pollution may lead to the same changes in the lung that give rise to emphysema. A new study published Tuesday in JAMA finds that long-term exposure to slightly elevated levels of air pollution can be linked to accelerated development of lung damage, even among people who have never smoked. The study looked at the health effects of breathing in various pollutants, including ground-level ozone, the main component of smog. The researchers found that people in the study who were exposed for years to higher-than-average concentrations of ground-level ozone developed changes to their lungs similar to those seen in smokers. "We found that an increase of about three parts per billion...
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Air Pollution May Be As Harmful To Your Lungs As Smoking Cigarettes, Study Finds