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Attention, chocolate lovers: You may not be able to help yourselves. Swiss and British scientists have linked the widespread love of chocolate to a chemical "signature" that may be programmed into our metabolic systems.
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First Aid for Shock

Overview, Causes, & Risk Factors

Shock occurs when blood flow throughout the body is decreased and the body tissues don't get enough oxygen. This lack of oxygen causes injury to many body systems. There may be brain, kidney, or heart damage; loss of a limb; and intestinal problems.

What are the causes and risks of the injury?

There are many causes for shock, including:

heart attacks

severe trauma, such as a serious motor vehicle accident

infections

diabetes

loss of blood

head injury

anaphylaxis, which is a severe allergic reaction

severe vomiting

hypothermia, or a drop in body temperature due to cold exposure

severe diarrhea

Shock is a life-threatening condition and requires emergency medical treatment immediately.

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