What is Chronic Obstructive Pulmonary Disease (COPD)?

cop4dOf all inhalational exposures, carette smoking is the primary risk factor in most countries, although only approximately 15% of people who smoke develop clinically apparent COPDCOPD is a group of progressive lung diseases that includes emphysema and chronic bronchitis. Despite affecting an estimated 32 million people in the United States, as many as half are unaware they