The most commonly abused substance is alcohol.
Prevention programs help young people decide not to use alcohol before the age of 21. Prevention programs also help those whose alcohol consumption has reached the extent that it is detrimentally impacting the individual, their community, workplace and family. Those with a history of addiction, young people and those that are pregnant or trying to get pregnant should not consume alcohol.
Binge drinking is linked to health, legal, personal, safety, work and family injury, damage and problems. Binge Drinking is defined as 4 or more drinks in one sitting for a female and 5 or more drinks in one sitting for a male. There are also drinks per week limits that prevent binge drinking and alcohol problems.
A Comprehensive Resource: National Institute on Alcohol Abuse and Alcoholism