An introduction focusing on holistic health as it relates to drug use and abuse, this text provides students with the fundamentals of prevention, intervention and treatment with a clearer, more logical organization that emphasizes how drugs are used in society rather than how drugs work with the body. New profiles and boxed features help students apply concpets to real situations and encourage critical thinking. A study guide at the end of the text has been added, to help students prepare for examination. There are also chapters covering inhalants and caffeine.