Haunted by the cystic fibrosis patients he could not help, one Iowa doctor commits his life to understanding what is broken deep inside their cells.

Modulator pills transformed cystic fibrosis care. But the fight for a cure is not over — so long as research remains funded.

Phlegm buildup in the lungs and throat is a common problem, especially during colds, allergies, pollution exposure, or respiratory infections. Phlegm is a thick mucus produced by the respiratory ...

Vladimir Putin could be seen coughing and struggling to catch his breath in an unedited video uploaded by The Kremlin.

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Keeping Cough,” “Theraphonia,” and, oh, yes, “polio”: common ailments in the age of R.F.K., Jr.

Part of what is going to make this offseason tougher than past ones for the Philadelphia Eagles is that they have to game-plan for the next two to three years. That's because they have a ton of young ...