Chronic obstructive pulmonary disease (COPD)

cop4dChronic obstructive pulmonary disease (COPD) is a progressive lung disease. Learn about the stages of COPD, their symptoms, and how to manage the disease here.What causes COPD? Damage to your lungs from smoking is the most common cause of COPD. Other causes include: Alpha-1 antitrypsin deficiency (alpha-1), a genetic