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While not reversible, the progression of COPD can be significantly slowed by making lifestyle changes. The single most important factor in preventing the progression of the disease is to quit smoking. Patients are also encouraged to avoid second-hand smoke situations, as well as air pollution, dust, and certain cooking or heating fumes.
Left untreated, COPD will tend to progress and eventually cause death. COPD is the fourth leading cause of death in America , claiming the lives of 120,000 Americans in 2002.
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