Chronic Obstructive Pulmonary Disease (COPD) refers to a set of lung diseases, specifically emphysema and chronic bronchitis. Over 80 percent of people who have COPD are smokers or former smokers, however, a small percentage of people develop the disease due to an alpha-1 antitrypsin deficiency. Symptoms include shortness of breath, wheezing, phlegm-producing cough and fatigue.

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