How cancer spreads

Cancer of the throat or larynx

From a top view of the voice box (larynx) and vocal cords, this animation shows the formation of a malignant tumor on the right vocal cord.

• Cancer

Celebrex: Therapeutic Uses and Dosing

A discussion of which conditions Celebrex is used to treat, how it works, and dosing tips

• Celebrex

Squat exercises for leg muscles

The squat is an exercise that targets the leg muscles. See how it's done.

Start at the Store: Prevent Foodborne Illness

By starting at the store with safe food handling practice, consumers can play a major role in preventing foodborne illness. In this new Consumer Update video, the U.S. Food and Drug Administration (FDA) provides tips for keeping food safe while guiding viewers through a grocery store.

Alzheimers disease

This animation shows the brain and the changes that occur to it from Alzheimer's disease.

• Alzheimer's Disease