From a December 14 National Institute on Drug Abuse (NIDA) press release:
Fueled by increases in marijuana use, the rate of eighth-graders saying they have used an illicit drug in the past year jumped to 16 percent, up from last year's 14.5 percent, with daily marijuana use up in all grades surveyed, according to the 2010 Monitoring the Future Survey (MTF).
For 12th-graders, declines in cigarette use accompanied by recent increases in marijuana use have put marijuana ahead of cigarette smoking by some measures. In 2010, 21.4 percent of high school seniors used marijuana in the past 30 days, while 19.2 percent smoked cigarettes.
The survey . . . also shows significant increases in use of Ecstasy. In addition, nonmedical use of prescription drugs remains high. MTF is an annual series of classroom surveys of eighth, 10th, and 12th-graders conducted by researchers at the University of Michigan, Ann Arbor, under a grant from the National Institute on Drug Abuse (NIDA), part of the National Institutes of Health.
Most measures of marijuana use increased among eighth-graders, and daily marijuana use increased significantly among all three grades.
"These high rates of marijuana use during the teen and pre-teen years, when the brain continues to develop, place our young people at particular risk," said NIDA Director Nora D. Volkow, M.D. "Not only does marijuana affect learning, judgment, and motor skills, but research tells us that about 1 in 6 people who start using it as adolescents become addicted."
"The increases in youth drug use reflected in the Monitoring the Future Study are disappointing," said Gil Kerlikowske, director of the White House Office of National Drug Control Policy. "Mixed messages about drug legalization, particularly marijuana, may be to blame. Such messages certainly don't help parents who are trying to prevent kids from using drugs."