Caffeine-found in tea, coffee, mate cola beverages, cocoa, and chocolate products-is an integral part of the diet of many people. Caffeine answers questions for a broad range of readers interested in the effects beverages and foods containing this dietary methyl xanthine have on human health, nutrition, and physiological functioning. The composition, processing, consumption, health effects, and epidemiological correlations of caffeine are examined in detail. It is often said that too much caffeine is “bad for you.” How much is too much? Get the facts on consumption of caffeine-containing products with this authoritative text.