Your immune system could weigh 1 to 1.2 kilograms and contain 1.8 trillion cells. “The immune system is a complex system comprising many different cell types with essential functions,” says Ron Milo ...

A longevity expert reveals how immune systems begin aging after 35, making people more susceptible to infections and ...

Nerve injuries can have long-lasting effects on the immune system that appear to differ between males and females, according ...

Our immune systems prevent and limit infections. They are a complex set of organs, cells, tissues and proteins that work together to protect our bodies from harmful invaders such as bacteria, viruses, ...

Endurance exercise may train the immune system as much as the muscles. Older adults with decades of running or cycling had immune cells that functioned better and aged more slowly. Their inflammation ...

Tom Anchordoquy receives funding for this work from the Nationals Institutes of Health through grant # RO1 CA289447. When the first cells appeared on Earth approximately 3.8 billion years ago, viruses ...

The 2025 Nobel Prize in physiology or medicine has been awarded to a trio of scientists – two of them American and one Japanese – for unraveling how the immune system protects us from thousands of ...

Scientists have found a way to supercharge the immune system’s T cells by blocking a protein called Ant2, essentially rewiring how these cells generate energy. This metabolic reprogramming makes them ...

The study published online Sept. 26, 2025, in the journal Advanced Science describes a miniaturized, fully human liver system built from stem cells and a patient's own immune cells—a powerful new tool ...

Hepatitis B virus (HBV) reactivation may occur if someone has chronic HBV, prior exposure to HBV and is undergoing treatment, or a health condition that suppresses their immune system. The hepatitis B ...