Buzzed is now revised and updated with the most recent discoveries about drugs. It includes new information about biological and behavioral changes in addiction, the prescription-drug abuse epidemic, distinctive drug effects on the adolescent brain, and trends from synthetic cannabinoids to e-cigarettes. This handbook surveys the most used and abused drugs from caffeine to heroin to methamphetamine. In both quick-reference summaries and in-depth analysis, it reports on how these drugs enter the body, how they manipulate the brain, their short-term and long-term effects, the different "highs" they produce, and the circumstances in which they can be deadly.