Acute cannabis exposure can transiently impair cognitive performance, increasing the risk of accidental injury and potentially disrupting activities o…

Rationale Harmful alcohol use remains a significant global public health challenge. Examining variability in the acute subjective effects of alcohol and related neurobiological mechanisms may advance the understanding of susceptibility to harmful alcohol use. Research suggests the endocannabinoid (eCB) system may play an important role in mediating the reinforcing effects of alcohol. This study examined the relationship between alcohol-induced changes in eCB concentrations and the subjective psychoactive effects of acute alcohol consumption. Method Healthy social drinkers (n = 28, aged 20–35 years) participated in a within-subjects, single-blind, placebo-controlled laboratory alcohol challenge study. Alcohol (0.6 g/kg; with 20% adjustment for women) and placebo sessions were counterbalanced. Subjective alcohol effects were assessed from self-report questionnaires administered pre- and post-dosing, including the Biphasic Alcohol Effects Scale (BAES), Drug Effects Questionnaire (DEQ), and Profile of Mood States (POMS). The eCBs, N-arachidonoylethanolamine (anandamide; AEA) and 2-arachidonylglycerol (2-AG), were assessed from blood plasma taken throughout the dosing session. Results Acute alcohol was associated with an overall decrease in 2-AG concentrations compared to placebo. Further, we found that a drop in 2-AG concentrations was associated with less drug ‘liking’ and feelings of ‘friendliness’, whereas under placebo conditions, a rise in 2-AG was associated with a smaller decrease in feelings of ‘stimulation’ (e.g., feeling energized, talkative). Alcohol did not significantly affect AEA concentrations. Conclusion Our study provides the first evidence that eCBs may contribute to individual differences in sensitivity to alcohol's reward-related mechanisms by influencing subjective experience, offering insight into the potential role of eCBs in the processes underlying harmful alcohol use.

Introduction Cannabis use and cannabis use disorder (CUD) are more prevalent among men and boys than among women and girls. However, this sex/gender gap has been narrowing in recent decades, likely du...

Background: Cannabis use is common among individuals with substance use disorders (SUDs), yet its relationship with mental health characteristics in treatment-seeking populations remains unclear. O...

The aim of the CCS is to obtain detailed information about the habits of people who use cannabis and behaviours relative to cannabis use

Purpose of Review Sexual and gender minorities (SGM) appear to be at elevated risk for cannabis use (CU) and cannabis use disorder (CUD) compared to cisgender heterosexuals. However, risk factors rema...

Introduction: In epidemiological studies, people who use cannabis have a lower prevalence of obesity. Furthermore, the endocannabinoid system is recognized as a potential target for obesity treatment ...

Introduction Although cannabis use has been historically higher in men than women, some research suggests a narrowing of the sex/gender gap in recent decades. We characterised trends in cannabis use...