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Medical students not trained to prescribe medical marijuana: More than half of the states in the US now allow some type of legal marijuana use, primarily medical marijuana. But, in a survey of medical residents and deans at the nation's medical schools, researchers have found that the majority of schools are not teaching their students about medical marijuana, and the majority of students don't feel prepared to discuss the subject with patients.
Marijuana may produce psychotic-like effects in high-risk individuals: Marijuana may bring on temporary paranoia and other psychosis-related effects in individuals at high risk of developing a psychotic disorder, finds a preliminary study.
Reversing the negative effects of adolescent marijuana use: Researchers have identified a specific mechanism in the prefrontal cortex for some of the negative mental health risks associated with adolescent marijuana use. By demonstrating that adolescent THC exposure modulates the activity of a neurotransmitter called GABA in the prefrontal cortex region of the brain, they were also able to identify a mechanism to reverse those risks.
Do we need to reform international drug treaties as more countries legalize cannabis?: The future of international drug control treaties is in doubt because of recent treaty-violating decisions to legalize cannabis use in Canada, the United States and Uruguay. A professor, whose 2014 review of 20 years of cannabis research made world headlines, thinks so. If decriminalization is the way of the future, he advocates a cautious approach to policy reform that would involve trialing and evaluating the effects of incrementally more liberal drug policies.
CBD may protect against psychiatric risk from high-THC cannabis strains: A study by neuroscientists finds that a non-psychoactive compound in cannabis called cannabidiol, or CBD, appears to protect against the long-term negative psychiatric effects of THC, the primary psychoactive ingredient in cannabis.
Marijuana use amongst youth stable, but substance abuse admissions up: While marijuana use amongst youth remains stable, youth admission to substance abuse treatment facilities has increased.
Marijuana associated with three-fold risk of death from hypertension: Marijuana use is associated with a three-fold risk of death from hypertension, according to new research.
Muted stress response linked to long-term cannabis use: A new study reveals a dampened physiological response to stress in chronic cannabis users. This is the first study to examine the effects of acute stress on salivary cortisol levels in chronic cannabis users compared to non-users.
Pattern of marijuana use during adolescence may impact psychosocial outcomes in adulthood: A pattern of escalating marijuana use in adolescents is linked to higher rates of depression and lower educational accomplishments in adulthood.
Omega-3 fatty acids fight inflammation via cannabinoids: Chemical compounds called cannabinoids are found in marijuana and also are produced naturally in the body from omega-3 fatty acids. A well-known cannabinoid in marijuana, tetrahydrocannabinol, is responsible for some of its euphoric effects, but it also has anti-inflammatory benefits. A new study in animal tissue reveals the cascade of chemical reactions that convert omega-3 fatty acids into cannabinoids that have anti-inflammatory benefits - but without the psychotropic high.
Depression among young teens linked to cannabis use at 18: Young people with chronic or severe forms of depression were at elevated risk for developing a problem with cannabis in later adolescence, found a study looking at the cumulative effects of depression in youth.