In TODAY.com's Expert Tip of the Day, a doctor reveals the important clues about your health that can be found in your snot.

Lung cancer is a disease that, like most cancers, results from uncontrolled cell growth, leading to tumor formation. While ...

A pulmonologist at the Cleveland Clinic shares the lung cancer warning signs he looks for in his own body. The deadly disease ...

Medically reviewed by Jane Kim, MD Drinking plenty of fluids can help decrease the thickness of phlegm and make it easier to remove. Bloody, brown, white, yellow, or green phlegm may be a sign of an ...

Bronchitis may cause you to cough up blood, known as hemoptysis. Bronchitis is inflammation of the bronchial tubes, or airways, that usually happens due to an infection or breathing in irritants like ...

Developing a new and persistent cough, as well as wheezing or coughing up bloody phlegm are all significant symptoms that could signal problems with your lung health and potentially be early signs of ...