Cannabis

A longitudinal study published in Frontiers in Psychiatry investigated the effects of medicinal cannabis among clinically depressed and/or anxious patients. Those who were using medicinal cannabis at baseline had lower depression scores than non-users, and non-users who began taking cannabis...

A new longitudinal study provides some initial evidence that preconception cannabis use is associated with an increased risk of postpartum depression. The findings have been published in the journal Drug and Alcohol Dependence.

Cannabis use may be associated with subtle long-lasting changes in speech, according to new exploratory research published in the journal Drug and Alcohol Dependence. Cannabis appears to have long-lasting effects on motor function, including alterations in the way that people...

Cannabis use during adolescence is associated with altered brain development, according to a new study published in JAMA Psychiatry. The new research represents the largest longitudinal neuroimaging study of cannabis use to date. Although some studies have found evidence that...

Psychedelic drugs such as psilocybin and LSD can induce an experience known as oceanic boundlessness, which is characterized by a feeling of oneness with the world and a sense of awe. New research, published in the Journal of Psychopharmacology, provides...

A new report published in the journal Cannabis and Cannabinoid Research presents an overview of the clinical findings concerning the effectiveness of cannabidiol (CBD) in the treatment of anxiety. While the report suggests that CBD may offer a safe and...

An analysis of a large dataset of medical cannabis users has indicates that many people with obsessive-compulsive disorder report that their symptoms are reduced after smoking the substance. The preliminary study, published in the Journal of Affective Disorders, found that...

Frequent or dependent cannabis use in adolescence is associated with an almost 2-point decline in IQ over time, according to new research published in Psychological Medicine. "Cannabis use in general is growing in prevalence in western countries, generally concurrent with...

Treatment with highly purified cannabidiol among epilepsy patients is associated with increases in neural activity in prefrontal brain regions related to verbal memory and attention, according to new research published in Epilepsy & Behavior. But the treatment does not appear...

A single large dose of cannabidiol (CBD) does not alter brain activity in several reward-related brain regions, according to a new double-blind, placebo-controlled study. The findings appear in the Journal of Psychopharmacology. "The last few years have seen a surge...

Entrepreneurs who use cannabis tend to generate new business ideas of higher originality, but lower feasibility, compared to those who abstain from the substance, according to new research published in the Journal of Business Venturing. The findings suggest that cannabis...

Cannabidiol (CBD), a compound derived from the cannabis plant, does not impair cognitive functioning when used in the treatment of children with intractable epilepsy, according to new research published in the journal Epilepsy & Behavior. Previous research has found that...

A small dose of cannabidiol (CBD) does not appear to negatively affect a person's ability to drive, according to new research published in the Journal of the American Medical Association. But that is not the case for tetrahydrocannabinol (THC), the...

New research provides some preliminary evidence that smoking cannabis can negatively impact one's voice. The findings have been published in the Journal of Voice. "Marijuana use has been common among rock and popular singers for decades, but it also occurs...

New research published in Neuropsychopharmacology found evidence that cannabis weakens working memory by increasing off-task thinking and by disrupting one’s ability to accurately monitor task performance. Tetrahydrocannabinol (THC), the main psychoactive ingredient in cannabis, is commonly believed to disrupt working...