“Energy drinks” (EDs) often contain high levels of caffeine and sugar, with variable levels of taurine, guarana, other “supplements,” and on occasion, vitamins. Frequently chosen by teens and young adults, the sale of EDs has enjoyed tremendous market growth. Over 4.6 billion cans of the most successful of these beverages, Red Bull, were sold in 2011(1). This prosperity resulted from the strong, recent worldwide annual growth, such as 11% in the United States, 35% in France, and 86% in Turkey.
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