Why I continue to wear a mask in crowded spaces even after Quebec repealed the mask mandate on public transit.

Alpha-1 antitrypsin deficiency is an inherited disorder that may cause lung disease and liver disease. The signs and symptoms of the condition and the age at which they appear vary among individuals.

A summer spike in Respiratory Syncytial Virus (RSV) is spreading in North Texas.

Chronic bronchitis is a type of COPD (chronic obstructive pulmonary disease). COPD is a group of lung diseases that make it hard to breathe and get worse over time.