Originally posted on TIME:
In research published in the journal Pediatrics, researchers looked at trends in caffeine intake among people ages 2 to 22 between 1999 to 2010. They found that in 1999, 62 percent of kids and young adults got most of their caffeine from soda. But in 2010, that number dropped significantly to 38 percent.
Energy drinks were not a factor at the beginning of the study, but between 2009 to 2010, they rose to 6 percent of caffeine intake among young people. Coffee also made a jump, from 10 percent of caffeine intake in 1999-2000 to about 24 percent in 2009-2010.