- The more exposure people have to air pollution, especially ozone, the more lung damage they develop over time, a U.S. study suggests.
About 46per cent of the study group were lifelong nonsmokers, and 22per cent of participants had some airflow obstruction at the beginning of the study period. Over 10 years, the average decline in lung function for the entire group was a little over 300 milliliters of volume on inhalation and exhalation tests.
Ever-smokers and people with lung damage at the start of the study experienced the greatest increases in percentage emphysema and declines in lung function.
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