This document discusses substance use and abuse among teenagers. It describes why teenagers may use substances, such as peer pressure or to deal with stress. It identifies different types of drugs, including depressants, marijuana, cocaine, and hallucinogens. The document discusses the effects of drug use on teenage brain development, social life, and health. It provides an example of one woman's experience with drug addiction from age 12 to seeking treatment at age 18. In conclusion, it stresses the importance for teenagers to avoid substance use and resist peer pressure, as their health and lives depend on the decisions they make.