Caffeine Craze

Thirty-one percent of U.S. teenagers say they drink energy drinks, according to Simmons Research. That represents 7.6 million teens, a jump of almost 3 million in three years.

Nutritionists warn that the drinks, laden with caffeine and sugar, can hook people on an unhealthy jolt-and-crash cycle. The caffeine comes from multiple sources, making it hard to tell how much the drinks contain. Some have B vitamins, which when taken in megadoses can cause rapid heartbeat, and numbness and tingling in the hands and feet.

How much caffeine do energy drinks contain? A University of Florida study found that some products, although served in cans two-thirds the size of a standard can of Coke, contain two to four times the amount of caffeine as that Coke. Energy drinks are unregulated in the United States, but the authors of the University of Florida paper suggest warning labels for them.

And now energy drinks are moving toward bigger cans with some products raising the caffeine content to gain a competitive edge, said John Sicher of Beverage Digest. The biggest, so far, is 24 ounces.

To find out how much caffeine is in your drink visit www.energyfiend.com