Disease can arise both when immune cells are too active and when they're not active enough. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. For ...

Sat, January 24, 2026 at 2:56 PM UTC The immune system is the body’s natural defense network that helps to keep you healthy from things like bacteria, viruses, and parasites. It’s a complex network of ...

Every day, your immune system performs a delicate balancing act, defending you from thousands of pathogens that cause disease while sparing your body's own healthy cells. This careful equilibrium is ...

From your digestive system to sleep, here are the overlooked signals that indicate your health could be struggling ...

From childhood coughs and colds, through meningitis B in teens and shingles in older people, here’s how our immunity to ...

This is read by an automated voice. Please report any issues or inconsistencies here. Three scientists won the Nobel Prize in medicine for discoveries about how the immune system avoids attacking ...

A breakthrough in CAR-T therapy may allow cancer treatment with a single injection, cutting costs and making care more available.

Cancer immunotherapies, including cancer vaccines, harness and amplify the immune system’s natural ability to detect and attack cancer cells. In this illustration, immune T cells (pink) attach to a ...

Small food protein signals teach immune cells to accept food. The finding helps explain how the body prevents food allergies.