Chronic obstructive pulmonary disease (COPD) includes two lung conditions—chronic bronchitis and emphysema. More than 12 million people in the United States have COPD, but millions more have COPD without knowing it.

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15 COPD Symptoms

Chronic obstructive pulmonary disease (COPD) is a common problem—24 million people in the U.S. are thought to have it—but few people have a grasp of what it is.

10 U.S. Cities With the Worst Air Pollution

The good news: Air has gotten cleaner in recent years. Now the bad: More than half of people in the U.S. still breathe air dirty enough to cause health problems, according to the American Lung Association.

Celebrities With the Lung Disease COPD

COPD is not a glamorous disease. And yet, over the years, celebrities who have suffered from COPD have, through their fame, brought greater awareness to this serious and life-threatening disease.

Healthy Eating Tips for People with COPD

Eating a healthy, balanced diet is important, because being overweight or underweight can make breathing problems worse. Here’s advice for home cooks and those who eat on the go.

More on COPD

I Coughed So Hard I Passed Out and Turned Blue

This near-death experience finally got him to quit smoking