Pneumonia is a common lung infection that can make breathing difficult and, in some cases, become life-threatening. It happens when the air sacs in the lungs fill with fluid or pus. Each year, about 900,000 Americans are diagnosed, and around 150,000 end ...

Pneumonia is caused by bacteria, viruses, fungi, or inhaling foreign objects. Children under age 5, adults over age 65, and those with chronic illnesses are at higher risk for pneumonia. Certain lifestyle choices like smoking and alcohol use can also put ...

Beloved Oscar-winning actress Diane Keaton died from pneumonia, according to a statement her family shared with People magazine. It was not clear if she had any underlying health conditions that contributed to her death on Saturday at 79. Pneumonia is an ...