Humans have been using various drugs to alter their moods and thoughts for thousands of years. Why do we do it? And what makes a particular person vulnerable to addiction? What can be done to stop problems with drug use before they start? Causes of Drug Use explores all these questions, sorting fact from fiction when it comes to the roots of drug use and misuse. From caffeine and aspirin to heroin and meth, drugs are an inescapable part of life in...