chapter 1 YOUR BRAIN, YOUR MIND—YOUR CHOICE -- chapter 2 CURRENT DRUG USERS—FUTURE ADDICTS? -- chapter 3 HOW THE BRAIN IS ORGANIZED -- chapter 4 HOW THE PARTS OF THE BRAIN COMMUNICATE WITH EACH OTHER -- chapter 5 HOW ADDICTIVE DRUGS CHANGE THE WAY NEURONS COMMUNICATE -- chapter 6 HOW DRUGS GET INTO THE BRAIN—AND OUT AGAIN -- chapter 7 DRUGS TELL THE BRAIN TO TAKE MORE DRUGS -- chapter 8 HOW DRUGS CHANGE THE BRAIN TO PRODUCE INTOXICATION, TOLERANCE, SENSITIZATION, PHYSICAL DEPENDENCE, AND WITHDRAWAL -- chapter 9 HOW DRUGS CHANGE THE BRAIN TO PRODUCE PSYCHOLOGICAL DEPENDENCE, CRAVING, AND ADDICTION -- chapter 10 Intervention and Treatment -- chapter 11 THERAPEUTIC USE OF ADDICTIVE DRUGS: HOW CAN A BAD DRUG BE GOOD? -- chapter 12 SUMMING IT ALL UP.