Scientists Uncover Hidden Trigger Behind Stem Cell Aging

Researchers found that the MLKL cell-death pathway can be switched on in blood-forming stem cells under age-related stress without killing the cells.

Instead, it disrupts mitochondrial function and gradually weakens the cells’ ability to regenerate and support normal blood and immune cell production.

The study points to a nonlethal mechanism behind blood stem cell aging and suggests a new target for therapies to preserve immune function and healthy blood production.