Pigeon droppings may seem harmless, but repeated exposure can trigger serious lung conditions like hypersensitivity pneumonitis that may lead to lung fibrosis.

Science X Daily and the Weekly Email Newsletter are free features that allow you to receive your favorite sci-tech news updates in your email inbox ...

DEAR DR. ROACH: I was a very active, healthy, young 68-year-old until March, when I was hospitalized for two weeks for bilateral pneumonia. I was told by the doctors at the hospital that it would take ...

Dear Dr. Roach: I was a very active, healthy, young 68-year-old until March, when I was hospitalized for two weeks for bilateral pneumonia. I was told by the doctors at the hospital that it would take ...