
(HealthDay News) -- Pulmonary fibrosis is a disease that can lead to scarring in air sacs within the lungs. This can make breathing difficult.
Most cases of the disease have no known cause, and its severity varies from person to person.
About 140,000 Americans have been diagnosed with pulmonary fibrosis, the American Lung Association says.
Here are the group's suggestions for managing the disease:
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