lay readers, this one is unique in the breadth of its coverage and the depth of its science. The first part gives a clear scientific account of the nature of addiction, stressing neurobiology and addictive behavior and describing the "highs" that drugs can produce. The second section covers the seven families of addictive drugs, with emphasis on their actions in the brain and on psychological aspects: nicotine, alcohol, heroin and other opiates, cocaine and amphetamines, marijuana, caffeine, and hallucinogens like LSD. The third section deals with laws and drug control policies. Throughout, the author gives many interesting personal accounts of addiction research, to which he has highlighted new research on the genetics and neurobiology of susceptibility to addiction.

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