Teenagers suffering from "caffeine intoxication" are increasingly calling poison control centers or going to hospital emergency rooms. They complain to ER doctors that they have heart palpitations, nausea and headaches.

Researchers at the University of Massachusetts Medical School found that more than half of caffeine-related calls to poison control centers came from those under 19 years old. They speculate that the popularity of energy drinks, which can contain three times the caffeine in coffee, may be linked to the problem.

Labels: caffeine, energy_drinks, intoxication