1. Your Brain, Your Mind - Your Choice 2. Current Drug Users - Future Addicts? 3. How the Brain Is Organized 4. How the Parts of the Brain Communicate with Each Other 5. How Addictive Drugs Change the Way Neurons Communicate 6. How Drugs Get Into the Brain - and Out Again 7. Drugs Tell the Brain to Take More Drugs 8. How Drugs Change the Brain to Produce Intoxication, Tolerance, Sensitization, Physical Dependence, and Withdrawal 9. How Drugs Change the Brain to Produce Psychological Dependence, Craving, and Addiction 10. Intervention and Treatment 11. Therapeutic Use of Addictive Drugs: How Can a Bad Drug Be Good? 12. Summing It All Up