Expert Video - What is Chronic Obstructive Pulmonary Disease (COPD)?

Learn what chronic obstructive pulmonary disease (COPD) is, how it starts, and how it affects your lung function from expert Dr. Jerry Krishnan of the University of Illinois at Chicago. Dr. Krishnan also explains how long it takes to develop COPD, and how many people may have COPD without even knowing it. Learn what causes COPD, when it can be genetic, and how your doctor can help you explore options for breathing better.

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