1. According to a study by Columbia University, underage drinkers account for 11.4 percent of all of the alcohol consumed in the U.S. 2. Nearly 10 million young people, ages 12 to 20, reported that they’ve consumed alcohol in the past 30 days. 3. Teens who drink heavily are three times more likely to try and hurt themselves (self-harm, attempt suicide etc.) than those who don't. 9 out of 10 American teens report that drinking is not worth the consequences it can cause. The rate of current alcohol consumption increases with age, according to the 2011 National Survey on Drug Use and Health, from 2 percent at age 12 to 21 percent at age 16, and 55 percent at age 20.