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COPD, or chronic obstructive pulmonary disease, is a major cause of disability and the third leading cause of death in the United States. More than 12 million people are currently diagnosed with COPD. An additional 12 million likely have the disease and don't even know it. Test your knowledge about the causes and symptoms of COPD. Learn how the disease affects the lungs and how you can prevent its complications.

Question 1. COPD is a lung disease that:
Question 2. In the United States, the term "COPD" describes two main conditions in the lungs:
Question 3. The most common lung irritant that causes COPD is:
Question 4. Common signs and symptoms of COPD include:
Question 5. If you have COPD, which steps can you take to prevent complications and slow the progress of the disease?

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July 31, 2013