Chronic Obstructive Pulmonary Disease

This information is useful for adults and older adults
A woman with chronic obstructive pulmonary disease is using a blue inhaler.

Chronic lung disease, also known as chronic obstructive pulmonary disease or COPD is now the third leading cause of death, following heart disease and cancer. More than 15.3 million people have the disease and many don't realize it. Left untreated, COPD can worsen dramatically.

Chronic obstructive pulmonary disease is a disorder characterized by persistent obstruction to airflow through the lungs, usually caused by harmful inhaled particles such as those found in tobacco smoke. Yale Medicine through the Chronic Obstructive Pulmonary Disease (COPD) Program is at the forefront of the research to develop more targeted, individualized treatments for patients.