Oscar-winning actress Diane Keaton died at 79 from pneumonia, her family told People, adding it's unclear whether any underlying conditions played a role. The article explains that pneumonia inflames air sacs in the lungs and can be viral or bacterial, with older adults at higher risk. Doctors warn of rapid complications, including sepsis, acute respiratory distress syndrome, low oxygen, and sudden arrhythmias. Symptoms range from cough and fever to confusion and shortness of breath. Prevention includes hygiene and vaccines for influenza, Covid, RSV, and pneumococcal disease, which CDC advisers recently recommended beginning at age 50.

Prepared by Olivia Bennett and reviewed by editorial team.