Lung diseases are some of the most common medical conditions in the world. Tens of millions of people suffer from lung disease in the U.S. Smoking, infections, and genetics are responsible for most lung diseases.
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Video: An Inside Look at How Pneumonia Affects Your Lungs
Pneumonia is an infection of the air sacs in your lungs. It’s usually mild but can be deadly, so see a doctor.
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Video: What Different Respiratory Problems Sound Like
Compare the sound of healthy lungs to noises that indicate a bigger health issue like pneumonia, rales, and other conditions.
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