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NIDA Notes Articles: Marijuana

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Fewer Young Adults Abuse Cocaine and Methamphetamine, National Survey Finds

December 2008

Reports prevalence rates of illicit drug abuse among youths and young adults based on 2007 data from a national survey of drug use and health.

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Elevated Rates of Drug Abuse Continue for Second Year

June 2012

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.

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Early-Onset, Regular Cannabis Use Is Linked to IQ Decline

August 2013

Regular cannabis use that starts in adolescence strips away IQ, a NIDA-supported study suggests. Participants who initiated weekly cannabis use before age 18 dropped IQ points in proportion to how long they persisted in using the drug. Persistent cannabis users’ cognitive difficulties were evident to friends and family and measurable on a battery of tests.

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

July 2011

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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Drug Abuse at Highest Level in Nearly a Decade

December 2010

Reports on 2009 data indicating a rise in drug abuse in the United States and the factors that may have contributed to this increase.

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Dr. Marilyn Huestis Q & A: Matching Drug Effects to Drug Concentrations

September 2013

Dr. Marilyn Huestis of NIDA’s Intramural Research Program talks about conducting research on drug effects with human subjects, developing tests to help law enforcement identify drugged drivers, and an assay to help identify children whose prenatal exposure to anti-HIV drugs may put them at risk for adverse developmental outcomes.

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Device Detects Marijuana in Breath Hours After Smoking

May 2014

Driving under the influence of marijuana is a dangerous public health concern. NIDA researchers have discovered that breath expelled into a Breathalyzer-style collection device contained measurable amounts of THC for up to 2 hours after participants in a recent clinical trial smoked the drug.

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Combination Treatment Extends Marijuana Abstinence

March 2008
Describes research investigating the use of a treatment that combines vouchers and cognitive behavioral therapy as compared with the use of either treatment alone for marijuana abuse.

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Brief Intervention Helps Adolescents Curb Substance Use

January 2013

NIDA-funded researchers have gathered evidence that brief interventions can help adolescents move away from drug use. In a clinical trial, middle and high school students markedly reduced their substance use following two 60-minute sessions that combined motivational interviewing and cognitive behavioral therapy.

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Brain Responds to Marijuana Cues in Familiar Manner

March 2011
Researchers found that the brain activity that takes place when cues trigger marijuana cravings is similar to the activity that accompanies cravings for other drugs.

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