COPD - Chronic Obstructive Pulmonary Disease

COPD is the 4th biggest killer of people in the U.S. and around the world. It is a disease caused by inhaling lung irritants of some sort over and over for years. It's slow to develop, and often, symptoms don't show themselves until a person is over 40. All About COPD explains what the disease is, what distinguishes chronic bronchitis from emphysema, and reviews available treatments.