What is the major cause of chronic obstructive pulmonary disease (COPD) and chronic bronchitis?

Question

Quizplus · Accepted Answer

Smoking is the major cause of both chronic obstructive pulmonary disease (COPD) and chronic bronchitis. Smoking damages the airways and lung tissue, leading to inflammation and obstructed airflow. Other factors such as air pollution and family history may increase the risk of developing COPD or chronic bronchitis, but smoking remains the primary cause. Infection can also worsen symptoms of COPD, but it is not the underlying cause.

What Is the Major Cause of Chronic Obstructive Pulmonary Disease