Describes the main brain functions that contribute to addictive behavior. Explains the major ways that addiction changes the brains of addicts. Describes how drugs mimic and alter neurotransmitters which provoke the psychological effects of addiction. Explains the difference between drug dependence, tolerance, and addiction. Describes the clinical consequences of addiction to food, opioids, street drugs, and alcohol. Lists and compare the major treatment options for legal and illegal drug addictions. Describes how the information in this course can be utilized to improve patient care and patient outcomes. Describes, for this course, the implications for dentistry, mental health, and other health professions.