According to study surveys, adolescents account for half of the energy drink market, and as many as 50 percent have reported consuming energy drinks.

The study says high levels of stimulants such as caffeine, taurine and guarana are in the energy drinks and that safe levels of consumption of these ingredients haven't been established for children.

It also says energy drink overdose can lead to seizures, stroke and even sudden death.

But some are saying the study's findings are hogwash, and that mainstream energy drinks like Red Bull contain as much and even only half as much caffeine as a cup of coffee.

"This literature review does nothing more than perpetuate misinformation about energy drinks, their ingredients and the regulatory process," said Dr. Maureen Storey, senior vice president of science policy for the American Beverage Association, in an e-mail to the Miami Herald.