A hormone called FGF21 can reverse obesity in mice by activating a newly identified brain circuit tied to metabolism. Surprisingly, it works in the hindbrain—the same region targeted by GLP-1 drugs ...

Researchers have found a way to make cancer-killing immune cells more powerful and precise. By adding specific signaling components, they boosted the cells’ readiness to attack tumors. Surprisingly, ...

Scientists have discovered that a protein linked to cell death is secretly driving the aging of blood stem cells in a ...

A rogue set of “zombie” immune cells may be driving aging and fatty liver disease by flooding tissues with inflammation.

The ozone layer has been on track to recover thanks to the Montreal Protocol—but a loophole may be holding it back. Chemicals ...

Researchers have discovered lithium hidden in pyrite within ancient shale rocks—an unexpected find that could reshape how we ...

A massive, nearly 20-year study tracking over 650,000 Americans with irritable bowel syndrome is raising new questions about the long-term safety of common treatments. Researchers found that some ...

Scientists have discovered that methane in the open ocean is produced by microbes under nutrient-poor conditions, solving a ...

New research suggests that aiming for a lower blood pressure target may deliver bigger heart health benefits than previously thought. Using large datasets and simulation models, scientists found that ...

A massive Swedish study shows that AI can spot people at higher risk of melanoma using routine health data. Advanced models ...

A surprising new clinical trial has revealed that metformin—a cheap, century-old drug widely used for type 2 diabetes—may help people with type 1 diabetes in an unexpected way. While researchers ...

A surprising discovery from high-altitude animals like yaks and Tibetan antelopes could reshape how we treat nerve damage in humans. Scientists found that a genetic mutation helping these animals ...