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Coffee
Caffeine is the world's most popular stimulant—the drug that four out of five Americans take on any given day. Most of the caffeine we consume comes from coffee....
The consumption of caffeine begins at an early age for many people. Caffeine is a natural ingredient in tea and coffee, and it is used as an additive in many baked goods, frozen dairy products, sweets, gelatins, puddings, and soft drinks. The quantities of caffeine in some commonly used items a...
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