Emphysema is a type of chronic obstructive pulmonary disease (COPD). If you have it, your body does not get the oxygen it needs to function. Cigarette smoking is the most common cause. Quitting smoking can keep it from getting worse.
What Is Chronic Obstructive Pulmonary Disease (COPD)? - This publication provides in-depth information on how the lungs work, and how chronic bronchitis, emphysema, pneumonia, and COPD can affect lung health. It also provides information on treatment and research information.