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Marijuana

Elevated Rates of Drug Abuse Continue for Second Year

Illicit drug use in the United States in 2010 was at its highest level since 2002, according to the most recent report from the National Survey on Drug Use and Health. A rise in marijuana use drove the increase. A favorable trend of falling cocaine use continued.

Tobacco Smokers Have High Probability of Transition to Dependence

First-time smokers have a much higher chance of eventually becoming dependent than first-time users alcohol, cannabis, and cocaine.

Individual Differences in Decisionmaking Style May Predict Teen Problems

Reports on the relative influence of genes versus environment on adolescents’ choices that involve delayed gratification.

Program Helps Troubled Boys Reduce Substance Abuse

Chronically delinquent boys in Multidimensional Treatment Foster Care reduced their substance abuse more than boys assigned to Community Group Care.

Cigarette and alcohol use at historic low among teens

Cigarette and alcohol use by eighth, 10th and 12th-graders are at their lowest point since the Monitoring the Future (MTF) survey began polling teenagers in 1975, according to this year's survey results.


Marijuana

Explains how THC, the active ingredient in marijuana, causes changes in the brain that affect memory, emotions, balance, and judgment.

Published: January 1997
Revised: August 2014


Read this publication online at the NIDA for Teens Web site »

The Brain & the Actions of Cocaine, Opiates, and Marijuana

The first in a 5-part series, offers an understanding of the brain, how the reward center works, and what happens in the brain when a person uses cocaine, opiates (heroine), or marijuana.

Revised: January 2007

High Rates of Illegal Drug Use Among Alcohol-Dependent Adults

Highlights data on the prevalence of rates of illegal drug use and nonmedical use of prescription drugs among adults dependant on alcohol, as compared with the general population.

Drugs Contribute to High Rates of Sexually Transmitted Diseases Among Juvenile Offenders

Describe a study of newly arrested youths where researchers found correlations between the youths' prevalence of these sexually transmitted diseases and their cocaine and marijuana use.

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