Caffeine in the diet

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Caffeine in the diet

Definition

Caffeine is a substance that exists naturally in certain plants. It can also be produced synthetically and used as an additive in food products. It is acentral nervous system stimulant and a diuretic.

Alternative Names

Diet - caffeine

Function

Caffeine is absorbed and distributed very quickly. After absorption, it passes into the brain. "Caffeine sensitivity" refers to the amount of caffeine that will produce negative side effects. This amount will vary from person to person.

Caffeine does not accumulate in the bloodstream nor is it stored in the body. It is excreted in the urine many hours after it has been consumed.

Caffeine will not reduce the effects of alcohol, although many people still believe a cup of coffee will "sober up" an intoxicated person.

Caffeine may be used as a treatment for migraine headaches and in relieving, for a short time, fatigue or drowsiness.

Review Date: 10/17/2003
Reviewed By: David Webner, M.D., Sports Medicine Fellow, Crozer-Keystone Family Practice Program, Springfield, PA. Review provided by VeriMed Healthcare Network.

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