Ethyl alcohol, the form of alcohol found in beer, wine, and liquor, is a psychoactive drug. It is classified as a central nervous system depressant, although its effects are often misinterpreted as stimulating. Low doses of alcohol significantly impair the judgment and coordination required to safely operate a motor vehicle. Moderate to high doses cause marked impairments in higher mental functions and alter a person’s ability to learn and remember information. Very high doses can cause respiratory depression and death. About one in ten people will find it difficult to control consumption, will have continuing problems associated with alcohol use, and will develop the disease of alcoholism. Even those who do not eventually develop alcoholism can experience and/or cause considerable harm to themselves, others, and the community. Individuals with a family history of chemical dependency face a higher chance of developing alcoholism or other forms of drug addiction. Women who drink alcohol during pregnancy may give birth to infants with fetal alcohol syndrome. These infants have irreversible physical abnormalities and intellectual disabilities. In addition, alcohol use has been found to be significantly related to the transmission of HIV and other sexually transmitted infections, unplanned pregnancy, fighting, assaults, vandalism, and the incidence of acquaintance rape and other crimes.