Smoking silently strains your heart; you need to watch early warning signs before damage builds.

Having trouble breathing or feeling out of breath can also be a warning sign. This might happen if a tumor is blocking the ...

Two very different patients, a farmer and a medical student, show how lung diseases can hide behind unusual symptoms. A ...

While occasional brown phlegm can be harmless, it should not be ignored, especially if it keeps coming back or is getting worse.