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NIDA Notes Articles: Marijuana

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In Nationwide Survey, More Students Use Marijuana, Fewer Use Other Drugs

April 2014
Almost one-third (32 percent) of the roughly 42,000 Monitoring the Future survey respondents reported having used marijuana during their lifetime. However, abuse of many other drugs—methamphetamine, heroin, cocaine, and some prescription medications—declined.

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Individual Differences in Decisionmaking Style May Predict Teen Problems

December 2011
Reports on the relative influence of genes versus environment on adolescents’ choices that involve delayed gratification.

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Intervention for Disruptive Children Shows Long-Term Benefits

October 2009
Reports on research providing evidence that teaching aggressive youngsters social coping skills reduces their chances of becoming substance abusers.

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Intervention Strengthens American Indian Teen Mothers’ Parenting

February 2014
Teen mothers on three American Indian reservations improved on several measures of parenting after participating in Family Spirit, a home-visiting intervention developed with NIDA support. At 12 months postpartum, the women’s children exhibited reduced rates of emotional difficulties predicting later drug abuse and other behavioral problems. Infants at highest risk—those whose mothers had histories of drug abuse—benefited the most.

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Long-Term Marijuana Use Is Associated With Health Problems Later in Life

February 2018
Researchers used the statistical technique of latent class analysis to describe distinct patterns of marijuana use across age using data from nearly 10,000 participants in the Monitoring the Future study. Longer-term marijuana use (extending from age 18 into the late 20s or beyond) was associated with increased risk of self-reported health problems at age 50. En Español

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Lower Rates of Cigarette and Marijuana Smoking Among Exercising Teens

October 2009
Highlights prevalence rates of cigarette and marijuana smoking among teens who exercise regularly as compared with their less active peers.

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Marijuana Linked With Testicular Cancer

December 2010
Reports on a study of close to 400 Washington State men that found that those who use marijuana may increase their risk for developing testicular cancer.

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Marijuana Smoking Is Associated With a Spectrum Of Respiratory Disorders

October 2006
Highlights two studies suggesting significant associations between marijuana smoking and respiratory disease.

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Marijuana Use May Promote Nicotine Consumption

April 2014
Exposing rats to THC increases the likelihood that the animals will later self-administer nicotine. THC-exposed rats are also willing to work harder to obtain nicotine. When extrapolated to people, the findings suggest that THC’s pharmacological impact on the brain may make a person who uses marijuana more vulnerable to developing nicotine addiction, an underappreciated health consequence of marijuana use.

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NIDA Initiates Pediatrics Symposium on Adolescent Health

April 2009
Presents highlights of a symposium sponsored by NIDA in October 2008 to discuss adolescent brain and cognitive development and consider the impact of drug abuse on young people.

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