Many preteens and young teens are likely to experiment with alcohol. But contrary to popular belief, older friends aren’t their suppliers—parents are. Researchers from the University of Florida who surveyed 4,000 12- to 14-year-olds found that about 17 percent of 12-year-olds consumed a full alcoholic drink within the past year. One-third said their most recent drink had come from their parents. Those statistics don’t include the 4 percent who admitted to taking alcohol from home without their parents’ knowledge. In addition to damaging the developing brain, say researchers, drinking at a young age heightens the risk of being involved in auto accidents, sexual assault and violence.