More teens are smoking pot

While use of drugs such as cocaine or methamphetamine has declined among U.S. teens, more adolescents are smoking marijuana, according to the results of an annual survey funded by the National Institute on Drug Abuse. Researchers at the University of Michigan surveyed some 47,000 eighth-graders, high school sophomores and high school seniors, and found that across all three groups, marijuana use was up. In the 2009 study, 11.8% of eighth-graders reported smoking pot, compared with 10.9% the year before, 26.7% of tenth-graders said they smoked pot, compared with 23.9% in 2008, and 32.8% of 12th-graders, compared with 32.4% the previous year.

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