The amphetamine-like substance may increase the rate at which the body burns calories, but also lowers blood sugar and increases hunger. Caffeine does not accumulate in the body over the course of time and is normally excreted within several hours of consumption. When regular caffeine consumption is abruptly discontinued, some individuals may experience withdrawal symptoms, such as headaches, fatigue or drowsiness. These effects are usually temporary, lasting for a few days, and often can be avoided if caffeine cessation is gradual. The average individual has the caffeine equivalent of 2 to 3 cups of coffee per day, as coffee, tea, cola or cocoa.
Coffee is twice as potent as tea or cola.
The standard stimulant dose is only 200 mg. However, many people exceed this dose, which has been found to cause withdrawal symptoms if intake is suddenly reduced. It is likely that physical or psychological dependence may occur. A Little History Lesson Caffeine is a naturally occurring substance found in the leaves, seeds or fruits of over 63 plant species worldwide and is part of a group of compounds known as methylxanthines. The most commonly known sources of caffeine are coffee and cocoa beans, cola nuts and tea leaves Coffee originated in Africa, where beans were used as money and consumed as food.