Caffeine in the diet

Alternative names:

diet and caffeine

Definition:

A substance that is extracted from plants or produced synthetically to be used as an additive in certain food products; it is a central nervous system stimulant and a diuretic.

Functions:

Caffeine is absorbed very quickly from the gastrointestinal tract and then distributed in the various body tissues. After absorption, it passes into the central nervous system. "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.