Lung diseases are some of the most common medical conditions in the world. Tens of millions of people have lung disease in the U.S. alone. Smoking, infections, and genes cause most lung diseases.
Bronchitis is a common condition. Learn more about what it is, what causes it, how it changes your lungs, and how it's treated.
MERS is a respiratory illness that can lead to fever, shortness of breath, pneumonia and kidney failure. Find out more about it and how it spreads
Lung diseases are some of the most common medical conditions in the world. Tens of millions of people have lung disease in the U.S. alone. Smoking, infections, and genes cause most lung diseases.