Researchers say three out of four U.S. children consume some caffeine and that the rate has not changed over the past ten years, but what has changed is where that caffeine comes from. ABC News reports while the rate of caffeine intake by children and young adults has stayed steady....their preferences have changed. New research shows that the rush is still mostly from soda but that energy drinks and coffee are rising. It's presumed in the study that coffee is increasingly popular because of the sweetened variety. And there's been a six fold increase in energy drink sales. The CDC study in the Journal Pediatrics points out that an energy drink can have up to four times the amount of caffeine as the same amount of soda.