Arizona researchers present a unified theory of Alzheimer's disease, linking cellular stress granules to all known symptoms.

Amyotrophic lateral sclerosis (ALS) is a relatively rare but very serious disease of the nervous system. A cure is not yet ...

The body's cells respond to stress-toxins, mutations, starvation or other assaults-by pausing normal functions to focus on conserving energy, repairing damaged components and boosting defenses.