Lloyd Johnston discusses new Monitoring the Future data showing a continued decline in smoking, stabilization of marijuana use, and a rise in binge drinking and Adderall misuse among U.S. teens. Johnston says the downward trend in teen smoking is signficant: “Since teen smoking reached a peak around 1996-1997, the rates of current (past 30-day) smoking have fallen by about three fourths among 8th graders, two thirds among 10th graders, and half among 12th graders.”

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