Caffeine common in kids, young adults; mainly soda
1 of 1
In this June 3, 2008 file photo, Megan Ward, left, drinks an energy drink with her friend Mykel Prescott from Parker, Colo., at Ward's home in Castle Rock, Colo.
Photos: 2014 Endless Summer Photo Contest entries
Photos: Okinawan Festival, August 31
Photos: Volleyball: UH vs. San Diego State, August 31
More Photo Galleries »