Alcohol is the most common drug used among adults in the United States. The use of alcohol is associated with an increased risk of injuries and accidents. Even a single episode of excessive drinking can lead to a negative outcome. Alcoholism and chronic use of alcohol are associated with numerous medical, psychiatric, social, and family problems. Family members, including children, exposed to a first-degree relative's alcohol problem are at risk for problems. Children of parents with alcohol addiction, for example, show higher rates of alcoholism than children who do not have parents with an alcohol addiction. It is important for social workers to keep in mind that alcohol and alcohol problems affect the health, safety, and well-being of people.