Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
Alcohol refers to a psychoactive substance that can impair brain function, leading to changes in behavior and cognitive abilities. It is a depressant that affects the central nervous system.
Related terms
BAC (Blood Alcohol Concentration): BAC refers to the amount of alcohol present in a person's bloodstream. It is measured as a percentage, indicating how much alcohol is in relation to total blood volume.
Impaired judgment: When under the influence of alcohol, people often make poor decisions or engage in risky behaviors due to impaired judgment.
Liver metabolism: The liver plays a crucial role in breaking down alcohol into less harmful substances. Its ability to metabolize alcohol influences how quickly it is eliminated from the body.