CBD Reduces Brain Activation in a Reward Region During Alcohol Cue Exposure
CBD reduced precuneus brain activation during exposure to alcohol-related visual cues in people with alcohol use disorder, though it did not affect craving, mood, or cognitive functioning.
Quick Facts
What This Study Found
In 22 non-treatment-seeking AUD participants, 800 mg CBD did not affect alcohol cue-elicited brain activation in pre-specified regions of interest. However, exploratory whole-brain analysis revealed CBD significantly reduced precuneus activation, a region involved in self-referential processing and reward. No effects on acute craving, mood, or cognitive functioning were observed.
Key Numbers
22 participants, mean age 29, 800 mg CBD or placebo in crossover design. No significant effects in ROI analysis. Significant CBD effect in precuneus in exploratory whole-brain analysis. No effects on craving, mood, or cognition.
How They Did This
Crossover double-blind randomized trial with 22 AUD participants (mean age 29) receiving 800 mg CBD or placebo. fMRI measured brain activation during an alcohol cue reactivity task. Secondary outcomes included mood, craving, and cognitive functioning.
Why This Research Matters
The precuneus plays a role in self-referential thinking and reward processing, both relevant to addiction. CBD modulation of this region during alcohol cue exposure could represent a neural mechanism for reducing alcohol-related responses.
The Bigger Picture
Combined with the companion neurometabolite study (RTHC-06701), these findings suggest CBD may modulate alcohol-related brain processes at multiple levels, from neurochemistry to functional activation, though the effects are subtle and context-dependent.
What This Study Doesn't Tell Us
Very small sample (n=22). The precuneus finding was exploratory (not pre-specified). Non-treatment-seeking participants may differ from clinical populations. The lack of craving effects limits clinical significance. Single-dose design.
Questions This Raises
- ?Would treatment-seeking AUD patients show larger CBD effects on cue reactivity?
- ?Does precuneus modulation translate to reduced drinking behavior over time?
Trust & Context
- Key Stat:
- CBD reduced precuneus brain activation during alcohol cue exposure in an exploratory whole-brain analysis
- Evidence Grade:
- Double-blind crossover RCT with fMRI is methodologically strong, but small sample and exploratory nature of the key finding reduce confidence.
- Study Age:
- 2025 publication.
- Original Title:
- Cannabidiol attenuates precuneus activation during appetitive cue exposure in individuals with alcohol use disorder.
- Published In:
- European archives of psychiatry and clinical neuroscience, 275(7), 2129-2139 (2025)
- Authors:
- Hurzeler, Tristan(2), Logge, Warren(2), Watt, Joshua(2), McGregor, I S, Suraev, Anastasia, Haber, Paul S, Morley, Kirsten C
- Database ID:
- RTHC-06702
Evidence Hierarchy
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Cite This Study
https://rethinkthc.com/research/RTHC-06702APA
Hurzeler, Tristan; Logge, Warren; Watt, Joshua; McGregor, I S; Suraev, Anastasia; Haber, Paul S; Morley, Kirsten C. (2025). Cannabidiol attenuates precuneus activation during appetitive cue exposure in individuals with alcohol use disorder.. European archives of psychiatry and clinical neuroscience, 275(7), 2129-2139. https://doi.org/10.1007/s00406-025-01983-4
MLA
Hurzeler, Tristan, et al. "Cannabidiol attenuates precuneus activation during appetitive cue exposure in individuals with alcohol use disorder.." European archives of psychiatry and clinical neuroscience, 2025. https://doi.org/10.1007/s00406-025-01983-4
RethinkTHC
RethinkTHC Research Database. "Cannabidiol attenuates precuneus activation during appetitiv..." RTHC-06702. Retrieved from https://rethinkthc.com/research/hurzeler-2025-cannabidiol-attenuates-precuneus-activation
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkTHC research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.