The scientists’ attempts to untangle what was going on inside these mice is redefining ... tests offer a single estimate of how an entire body is aging. It’s increasingly clear aging doesn ...

In truth, running a reasonable fever is nothing to fear – and in fact, might even allow your body to fight off invading ...

The composition of your microbiome can change at different points in your life, with the biggest shifts occurring during adolescence, pregnancy, old age, and after a big diet change.