Overview Key Takeaways: Your immune system is your body’s built-in defense network, working nonstop to protect you from bacteria, viruses, and other harmful invaders. Your immune … ...

Aging immune cells may be sabotaging the body from within. Researchers found that macrophages produce a protein that locks ...

Researchers found an association between increased activity in a reward region of the brain—primarily stimulated by hopeful thinking—and heightened levels of protective antibodies after receiving a va ...

Inflammation can feel like a small storm inside your body. It brings heat, swelling, and pain as the immune system rushes to ...