The groundbreaking original edition of Buzzed has sold over 60,000 copies—and now the authors have revised and updated it to include the most recent discoveries about drugs. This scientifically accurate and easy-to-read handbook gives the most balanced, objective information available on the most often used and abused drugs, from alcohol, caffeine, and nicotine to heroin, ecstasy, and Special K. 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 kinds of "high" they produce, and the circumstances in which they can be deadly. Neither a "just say no" treatise nor a "how-to" manual, Buzzed is based on the conviction that people make healthier decisions when they "just say know"—when they understand in straightforward language how our complex brains really work and why even small doses of various substances can have such powerful (and sometimes life-threatening) effects. 8 pages of color illustrations.