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Chunk #29 — Substance Use and Related Problems in Adolescence — Use Rates and Risks Associated with Early Onset

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Adolescent brain development and the risk for alcohol and other drug problems.
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Alcohol is by far the most widely used intoxicant among adolescents in the U.S., and rates of use increase dramatically during the teenage years (Johnston et al. 2009). By 8th grade, 37% of students have tried alcohol, increasing to 72% by 12th grade (Johnston et al. 2009). Past-month rates of getting drunk increase from 5% to 27%, and having consumed 5 drinks in a row in the past 2 weeks expands from 8% to 25% from 8th to 12th graders. Nicotine is fairly widely used, with 6% of 8th graders reporting any use in the past month, compared to 20% of 12th graders. Marijuana is the second most used intoxicant, with 16% of 8th graders and 42% of 12th graders reporting use at least once in their lifetime (SAMSHA 2009), and 21% of high school seniors endorse past month use. Other drug use is not as widespread yet still concerning, with past month use among 12th graders of amphetamines and misused narcotic pain pills at 3% and 4%, respectively (Johnston et al. 2009). Approximately 8% of those ages 12–17 meet