Prevention on College Campuses—In recent years, an increasing number of colleges have implemented policies to reduce alcohol consumption and alcohol-related problems (14). Examples include establishing alcohol-free college residences and campuses, prohibiting self-service of alcohol at campus events, prohibiting beer kegs on campus, and banning sales or marketing of alcohol on campus. Though research on the success of these programs is limited, studies have shown that students living in substance-free residences are less likely to engage in heavy episodic or binge drinking (five or more drinks in one sitting for men, four or more for women), and underage students at colleges that ban alcohol are less likely to engage in heavy episodic drinking and more likely to abstain from alcohol (52,53). College alcohol policies are less likely to have an effect on students who live off campus than on, however.