In the US, more than 10 million people above the age of 40 live with chronic obstructive pulmonary disease, or COPD, a chronic lung disease that limits air flow and causes breathing-related symptoms. Doug spoke with Dr MeiLan Han, a Professor of Medicine and Chief of the Division of Pulmonary and Critical Care at the University of Michigan Health, to discuss the impact inadequately controlled COPD has on daily life and a new treatment option. DUPIXENT.com