Caffeine, one of about 500 chemicals in coffee, is behind hundreds of controversies, studies, surveys, experiments and medical reports generated in the last ten years a whole spectrum of specialists and doctors, university studies and government investigations. They are trying to find some correlation to almost every major disease and illness known to man. Drug companies and food producers are counteracting with their own reports, touting the possible benefits of caffeine use. Over 60 plant species contain caffeine in their leaves, seeds or fruits. In its pure form caffeine is an iridescent white crystalline substance soluble in water and resembling refined sugar.
Manufacturers add caffeine to other products, including muffins, candies and yogurts.
It affects the central nervous system, increasing heart rate, blood pressure and breathing. It keeps mostus peppy, alert and energetic. It is odorless and bitter tasting. It can be bought by anyone in unregulated amounts. It is classified as a psychoactive drug, in the same group as heroin, cocaine, marijuana, nicotine and alcohol, and it influences mood and behavior.