1. Effects of Drugs of Abuse on the Developing Brain Ken Winters, Ph.D. Collaborating Investigator, Treatment Research Institute Professor, Department of Psychiatry, University of Minnesota winte001@ umn . edu The Downtown Club of Philadelphia, November 23, 2004
7. Grade Alcohol % Marijuana % Any Illicit % 8 20 8 10 10 35 18 21 12 49 22 25 Substance Use by Youth - Prior Month 2002 (Monitoring the Futures, 2003) Substance Abuse/Dependence rates vary: 3-15 %
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9. Percentages of Past Year Alcohol Dependence or Abuse Among Adults Aged 21 or Older, by Age of First Use (SAMHSA, 2004) Age Started Drinking Percent
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12. Construction Ahead motivation emotion judgment cerebellum amygdala nucleus accumbens Pruning occurs in stages, from back of the brain to the front prefontal cortex physical coordination; sensory processing;