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Helping a Choking Victim Animation

Choking is the obstruction of the trachea by food or other foreign objects. This animation illustrates how the obstruction happens, and how to help a choking victim.

If the animation above isn't working, click here to get the Shockwave player.

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9 Medical Myths

We've all heard questionable medical assertions, such getting arthritis from cracking your knuckles. Read our list of 9 medical myths.

How MRI Works

An MRI scan is the best way to see inside the human body without cutting it open, but that may be little comfort to you when you're getting ready for the exam. Lying perfectly still on a tiny slab in a narrow hole, you might wonder what's happening to your body.