Diane Keatons family has revealed the beloved actress died from pneumonia. The news is a powerful reminder that this infection can be far more serious than many people realize.

Keatons death is heartbreaking, and its a reminder that pneumonia can affect anyone. Its an infection that inflames the air sacs in the lungs. They can fill with fluid or pus, making it hard to breathe. What makes it so dangerous is that it often starts out mild. It can feel like a cold, the flu or just a stubborn cough at first.

The main symptoms are cough, fever, chills, chest pain, shortness of breath, nausea and fatigue. In older adults, it can also cause confusion or a lower-than-normal body temperature.

Now, pneumonia is caused by germs usually bacteria and viruses that we breathe in every day. Millions of

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