title: Addiction and the brain--Part II.
abstract: In the first part we discussed the acute and chronic effects of addictive drugs on the brain's reward system and the internal processes of neurons. In this part we discuss genetic and social influences and the implications of brain studies for the treatment of addiction and an understanding of its nature.
mesh_terms: D000818:Animals; D001921:Brain / Q000503:physiopathology; D005260:Female; D006801:Humans; D008297:Male; D009042:Motivation; D011593:Psychology, Social; D051381:Rats; D019966:Substance-Related Disorders / Q000235:genetics / Q000523:psychology / Q000628:therapy