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5. Chronic Obstructive Pulmonary Disease

COPD is a group of breathing disorders that includes emphysema and chronic bronchitis. Cigarette smoking is the primary cause of COPD, though air pollution and infections also contribute to the disease. Lung hyperinflation is a common complication because, like other risk factors, COPD causes progressive damage to the airway.

copd hyperinflation smoking emphysema bronchitis nikkytok / Getty Images

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This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other healthcare professional.