A fast-aging fish is giving scientists a rare, accelerated look at how kidneys grow old—and how a common drug may slow that ...

As people age, muscles naturally lose mass and strength, a condition known as sarcopenia. The decline can make everyday ...

As people age, muscles naturally lose mass and strength, a condition known as sarcopenia. The decline can make everyday activities harder and increases the risk of falls, disability and early death.

A test using a zebrafish model helped clinicians rule out SMA in two children, showing its potential use to clarify genetic ...