Mar 11, 2025 · The immune system defends the body from invaders such as viruses, bacteria, and foreign bodies. Find out how it works, what can go wrong, and how to boost immune health.

Oct 20, 2023 · You’ve heard of your immune system, but how does it work? Learn more about the cells and organs that protect your body and help it heal.

The Immune System What is the immune system? The immune system works to keep germs and other foreign substances out of the body and destroy any that get in. It's made up of a …