Drug addiction is an intense desire to obtain increasing amounts of a substance due to the body's physical need or addiction to that agent. The document discusses various drugs like marijuana and their effects. It provides tips on how to get rid of drug addiction through self-determination, getting professional help like consulting doctors or checking into rehabilitation facilities, and adopting healthy habits like exercise, nutrition, yoga and meditation. Without treatment for addiction, the consequences can include going to a mental hospital, death, or jail.