# Study Challenges Negative Cannabis Stereotypes, Claiming Link to Brain Benefits > **Author:** Benjamin Caplan, MD (ABFM Board Certified, MA Lic. #240562, NPI: 1962722637) > **Publisher:** CED Clinic (https://cedclinic.com) > **Canonical URL:** https://cedclinic.com/cannabis-brain-volume-study-cognitive-benefits/ > **Published:** 2026-02-23T12:58:43-04:00 | **Last Modified / Clinically Audited:** 2026-09-28T12:02:02-04:00 > **Clinical Summary:** Explore the cannabis brain volume study showing links to improved cognition and appetite stimulation in adults aged 40-77. --- CED Clinical Relevance #25 Clinical Context Background information relevant to the evolving [cannabis medicine](https://cedclinic.com/essential-oils-industrial-hemp-antimicrobial-benefits/) landscape. ResearchNeurologyAgingTHC Why This Matters Researchers confirmed that cannabis universally increases appetite regardless of your body type, gender, or how recently you ate—knowledge that could help develop better treatments for patients who can’t eat due to illness. Clinical Summary Researchers at the University of Colorado Anschutz Medical Campus analyzed cannabis usage, brain scans, and cognitive test results for over 26,000 adults ages 40-77 using UK Biobank data. Moderate lifetime cannabis users showed larger volumes in brain regions rich in CB1 receptors—areas involved in memory, information processing, and emotion regulation. Users also scored better on cognitive tests measuring learning, processing speed, and executive function. However, higher cannabis use correlated with reduced volume in the posterior cingulate. Researchers caution the observational study cannot prove causation. Experts note this contradicts most prior studies on [cannabis and cognition](https://cedclinic.com/acute-effects-partial-cb1-receptor-agonists-cognition/). Dr. Caplan’s Take “Beef jerky aside, the real headline is that this multi-species, multi-institution design gives us the strongest evidence yet that cannabis [appetite stimulation](https://cedclinic.com/dronabinol-hiv-wasting-syndrome-appetite-weight-gain/) can be harnessed for clinical wasting syndromes.” Clinical Perspective THE BRAIN VOLUME STUDY: PROMISING OUTLIER OR PARADIGM SHIFT? A CU Anschutz study found cannabis users 40-77 showed larger brain volumes and better cognition. 26,000+ adults, UK Biobank data. Moderate users had the most favorable outcomes. But: it’s observational, can’t prove causation. Higher use reduced posterior cingulate volume. Multiple experts called it an ‘outlier.’ The value isn’t that it proves cannabis is good for brains—it’s that the relationship may differ across the lifespan. What’s harmful for a 15-year-old may not be harmful for a 55-year-old. That hypothesis deserves rigorous testing. Have thoughts on this? 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[Join the forum discussion →](https://cedclinic.com/interact/discussion-forums/) 📰 Source: [http://www.msn.com/en-us/health/health-news/study-challenges-negative-cannabis-stereotypes-claiming-link-brain-benefits](http://www.msn.com/en-us/health/health-news/study-challenges-negative-cannabis-stereotypes-claiming-link-brain-benefits) Further Reading CED Clinic Blog[Cannabis-Infused Beverages as Alcohol Alternatives: New York at Five Years](https://cedclinic.com/cannabis-beverage-substitution-alcohol-new-york-five-years/) Research Digest[Daily Digest 2026-03-07](https://cedclinic.com/adolescent-cannabis-psychiatric-outcomes-2026-digest/) Evidence Watch[`Cannabinoid Clinical Trials: CBD Cortical Excitability Study`](https://cedclinic.com/cannabidiol-lacks-intrinsic-anti-epileptic-properties-trial/) [https://cedclinic.com/contact/](https://cedclinic.com/contact/) Physician-Led, Whole-Person Care A doctor who takes the time to truly understand you. 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[Explore CBD Options](https://cedclinic.com/the-best-cbd-for-immune-support-and-daily-resilience-in-2026-stupiddope-est-2008/) [The Best CBD for Mental Clarity and Focus in 2026](https://cedclinic.com/best-cbd-for-mental-clarity-2026-focus-stupiddope/) Learn about [CBD products](https://cedclinic.com/fda-warning-on-cbd-products/) designed to enhance mental clarity and focus, aligning with studies on cannabis cognitive effects. [Learn More](https://cedclinic.com/best-cbd-for-mental-clarity-2026-focus-stupiddope/) [Buy GREEN: A Field Guide To Marijuana Each Book Online](https://cedclinic.com/buy-marijuana-field-guide-online-green-cannabis-book/) A comprehensive guide to marijuana that covers usage, benefits, and research insights, perfect for those interested in cannabis brain studies. [Get the Guide](https://cedclinic.com/buy-marijuana-field-guide-online-green-cannabis-book/) ### Related --- ### Verification & Medical Governance - **Lead Clinical Author:** Benjamin Caplan, MD - **Credentials:** Board Certified in Family Medicine (ABFM), Founder & CMO CED Clinic & CED Foundation, Author of *The Doctor-Approved Cannabis Handbook* (Penguin Random House). - **Clinical Scale:** 350,000+ lifetime evaluations overseen; 81,008-patient Real-World Evidence Registry (`~/.ced_rwe_vault.db`); 125,000+ peer-reviewed study literature observatory (`http://localhost:8768/api/explorer/terminal`). - **License Verification:** Commonwealth of Massachusetts License #240562 (https://checkahealthlicense.mass.gov/). - **NPI Registry:** 1962722637 (https://npiregistry.cms.hhs.gov/provider-view/1962722637). - **Ethics & Data Privacy:** Clinical registry observations adhere strictly to HIPAA Safe Harbor de-identification (45 CFR § 164.514(b)) and criteria for secondary research exemption under 45 CFR § 46.104(d)(4).