# Acute Effects of Partial CB1 Receptor Agonists on Cognition – A Meta-Analysis of Human Studies > **Author:** Benjamin Caplan, MD (ABFM Board Certified, MA Lic. #240562, NPI: 1962722637) > **Publisher:** CED Clinic (https://cedclinic.com) > **Canonical URL:** https://cedclinic.com/acute-effects-partial-cb1-receptor-agonists-cognition/ > **Published:** 2021-07-27T15:32:03-04:00 | **Last Modified / Clinically Audited:** 2026-09-28T11:17:01-04:00 > **Clinical Summary:** Explore the acute effects of partial CB1 receptor agonists on cognition with this comprehensive meta-analysis of human studies. --- In Summary: Cannabis is one of the most widely consumed psychoactive plants in the world, and THC is the main component responsible for cannabis’ psychological effects – namely the sense of relaxation and euphoria. However, [cognitive impairment](https://cedclinic.com/cannabis-memory-impairment-health-risks-clinical-review/) is a side effect frequently observed in those who consume cannabis. To gain a thorough understanding of the [acute effects](https://cedclinic.com/episodic-memory-cannabis-impairment-study/) of administration of cannabis, THC and similar compounds such as dronabinol (the synthetic form of THC), nabilone (a synthetic analog of THC) on cognition in adults, clinical researchers at the Faculty of Medicine, University of Montreal, Canada recently performed a meta-analysis. The meta-analysis synthesized findings from 52 experimental studies that assessed cognitive dysfunction in 1580 non-psychiatric, healthy adult volunteers following administration of the above compounds. They found that cannabis, THC and its synthetic forms impaired all aspects of cognition, including verbal learning, verbal memory, working memory, speed of processing, attention, executive function, and impulsivity. Among these, the largest negative impact was on verbal learning, verbal memory, and working memory. Further sub-analyses on age and gender indicated that while the mean age of participants had no impact on the results, a greater ratio of males to females in a study was associated with greater cannabinoid-induced deficits in speed of processing and impulsivity found by that study. Through this inclusive, large-scale meta-analysis, the authors attempted to present the scientific community, medical community, and consumers alike with a thorough, impartial understanding of how consumption of cannabis and cannabis-derived psychoactive compounds may immediately affect cognition in healthy adults. This is a realm previously less understood than the effects of cannabis in chronic users. [More access here](https://cedclinic.com/) [https://cedclinic.com/contact/](https://cedclinic.com/contact/) Physician-Led, Whole-Person Care A doctor who takes the time to truly understand you. Personal care that starts with listening and is guided by experience and ingenuity. Health, Longevity, Wellness One-on-One Cannabis Guidance Metabolic Balance [Leave a Message](https://cedclinic.com/contact/) [Metabolic Care](https://cedclinic.com/metabolic/metabolic-how-it-works/) [Medical Consulting](https://cedclinic.com/book/) [Cannabis Care](https://cedclinic.com/book/) [https://cedclinic.com/contact/](https://cedclinic.com/contact/) RELATED READING AT CED CLINIC Continue exploring the evidence [Cannabis can blur, reshape your memory, Washington State University study finds](https://cedclinic.com/cannabis-induced-memory-dysfunction-clinical-insights/) This study explores how [cannabis use](https://cedclinic.com/cannabis-cardiovascular-health-insights-2024/) affects memory and cognitive functions, complementing insights on [CB1 receptor](https://cedclinic.com/aelis-farma-financial-results-2025-outlook/) agonists. [Read More](https://cedclinic.com/cannabis-induced-memory-dysfunction-clinical-insights/) [Study Challenges Negative Cannabis Stereotypes, Claiming Link to Brain Benefits](https://cedclinic.com/cannabis-brain-volume-study-cognitive-benefits/) A fresh perspective on cannabis effects on the brain, offering a balanced view alongside [cognitive impairment](https://cedclinic.com/cannabis-memory-impairment-health-risks-clinical-review/) studies. [Explore Study](https://cedclinic.com/cannabis-brain-volume-study-cognitive-benefits/) [First Human Clinical Trial: CBG Reduces Anxiety and Stress Without Intoxication](https://cedclinic.com/cbg-clinical-trial-anxiety-stress-relief/) Discover [clinical trial results](https://cedclinic.com/cannabidiol-liver-enzyme-elevation-healthy-adults/) on CBG, a cannabinoid with potential cognitive and psychological benefits without intoxication. [Learn More](https://cedclinic.com/cbg-clinical-trial-anxiety-stress-relief/) Have thoughts on this? 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