Immune system

Your immune system does far more than fight infections. It maintains tissues, clears damaged cells and keeps cancer in check.

Poor sleep in Alzheimer’s has long been blamed on the brain plaques that define the disease.

The immune system learns from every infection it encounters. That ability depends on a process in which immune cells…

Aging brain cells accumulate fat. That might sound trivial, but researchers now link this fat buildup directly to Alzheimer’s…

Bone loss is often seen as a routine part of getting older. But the immune system plays a larger role than most people…

The thymus is a small organ that produces T-cells for the immune system. By your fifties, almost no active thymus tissue remains.

Deep inside the brain, dedicated cells clean up waste, kill damaged cells and fight infection.

The body sometimes builds its own immune outposts near tumours. Whether those structures hold together and remain effective…