This video provides an overview of chronic obstructive pulmonary disease (COPD) and explores how it affects the quality of life, increases healthcare costs and is mostly irreversible. Have you heard of COPD? Do you know what it is? Why is it so common? Many people around the world suffer from Chronic Obstructive Pulmonary Disease, and the numbers are increasing every year. The World Health Organization estimates that it will be the third leading cause of death by 2020.