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BU: Marijuana use does not lower chances of getting pregnant

A new study published in Journal of Epidemiology and Community Health found that marijuana use among couples does not lower their chances of getting pregnant. The researchers surveyed over 4,000 women and their male partners, finding that conception probabilities were similar between those who used marijuana and those who did not.

SourceBoston University School of Medicine·JournalJournal of Epidemiology and Community Health·DateJan 22, 2018

Recreational marijuana legalization: Do more youth use or do youth use more?

A recent Oregon Research Institute study found that recreational marijuana legalization had no significant effect on the number of youth who used marijuana, but increased the frequency of use among those already using it. The study suggests that community sales policies may not reduce teenage marijuana use and highlights the need for p...

SourceOregon Research Institute·JournalPsychology of Addictive Behaviors·DateJan 8, 2018

Cigarette smoking is increasing among Americans with drug problems

A new study found that cigarette smoking rates increased among individuals with substance use disorders, including hallucinogens and heroin, while decreasing among those with cannabis use disorders. More than half of individuals with a substance use disorder reported cigarette use in the past month, compared to 18% without a disorder.

Cigarette smokers are 10 times more likely to be daily marijuana users

A study by Columbia University's Mailman School of Public Health found that cigarette smokers are 10 times more likely to use marijuana on a daily basis. The strongest relationship between cigarette smoking and daily cannabis use is among 12 to 17 year olds, who are 50 times more likely to be daily cannabis users than non-smokers.

SourceColumbia University's Mailman School of Public Health·JournalAmerican Journal of Public Health·DateNov 30, 2017

Study examines the effects of a marijuana alternative

Researchers investigated the effects of synthetic cannabinoid JWH-018, finding initial impairments in neurocognitive function and subjective feelings of high. The results suggest that common use scenarios may not be fully represented by the low drug concentrations used in the trial.

SourceWiley·JournalBritish Journal of Pharmacology·DateNov 22, 2017

What effect has substance abuse on outcome of schizophrenia treated with antipsychotics?

Long-term administration of antipsychotic drugs can worsen schizophrenia outcomes if patients consume substances like nicotine and alcohol or drugs like cannabis and amphetamines. However, measures such as administering long-acting injectable antipsychotics and psychoeducation can improve adherence and reduce substance abuse.

SourceBentham Science Publishers·JournalCurrent Drug Abuse Reviews·DateNov 2, 2017

A quarter of problematic cannabis users have anxiety disorders, many since childhood

Researchers found that nearly three-quarters of participants didn't develop problems with marijuana during young adulthood. The remaining quarter showed varying levels of limited, persistent, and delayed problems, often linked to childhood family conflict and instability. Anxiety disorders were a common issue among these users.

SourceElsevier·JournalJournal of the American Academy of Child & Adolescent Psychiatry·DateNov 1, 2017

A quarter of problematic pot users have anxiety disorders, many since childhood

A quarter of adults with problematic marijuana use have anxiety disorders in childhood and late adolescence. The study also found that some teens who abuse pot outgrow habit in adulthood. Childhood maltreatment and peer bullying were linked to an increased risk of chronic marijuana abuse, but not necessarily earlier use.

SourceDuke University Medical Center·JournalJournal of the American Academy of Child & Adolescent Psychiatry·DateOct 24, 2017

A new target for marijuana

A study published in JNeurosci found that chronic exposure to THC may alter inhibitory function in GABA neurons, increasing dopamine levels and promoting addictive qualities. This discovery could lead to a new target for treating cannabis use disorder.

Medical students not trained to prescribe medical marijuana

A study found that only 9% of medical schools teach their students about medical marijuana, leaving physicians-in-training unprepared to address patient questions. The research highlights a mismatch between state laws and medical education, emphasizing the need for more training on the benefits and drawbacks of medical marijuana.

SourceWashU Medicine·JournalDrug and Alcohol Dependence·DateSep 15, 2017

Evidence on cannabis for chronic pain and PTSD

The scientific evidence on cannabis for chronic pain and post-traumatic stress disorder (PTSD) is inconclusive, with only low-strength evidence suggesting potential benefits. However, researchers found significant risks associated with cannabis use, including increased risk of motor vehicle accidents and psychotic symptoms.

SourceAmerican College of Physicians·JournalAnnals of Internal Medicine·DateAug 14, 2017

Pattern of marijuana use during adolescence may impact psychosocial outcomes in adulthood

A study found that adolescents with an increasing pattern of marijuana use over their teens had the greatest dysfunction in brain reward circuitry, highest rates of depression, and lowest educational achievements. The findings highlight the importance of understanding marijuana use across adolescence to predict long-term impacts.

Study: Omega-3 fatty acids fight inflammation via cannabinoids

Researchers found an enzymatic pathway that converts omega-3-derived endocannabinoids into potent anti-inflammatory molecules, which bind to receptors in the immune system. This discovery demonstrates how omega-3 fatty acids can produce medicinal qualities similar to marijuana without a psychotropic effect.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalProceedings of the National Academy of Sciences·DateJul 18, 2017

Canada should continue with separate medical stream after cannabis is legalized for recreational use

A commentary in CMAJ argues that a two-streamed structure is necessary to keep patients safe and support research into the therapeutic effects of cannabinoids. This structure would provide incentives for research, educational resources for healthcare practitioners, and reduce risk to patients.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateJul 17, 2017