Intense exercise did not show hippocampal benefits in adults with cannabis use disorder
A supervised exercise trial found no improvement in its brain imaging outcome or related cognitive and mental health impairments while participants continued consuming cannabis.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
For adults with moderate to severe cannabis use disorder who continued using cannabis, this trial did not demonstrate improvements in hippocampal integrity with high-intensity interval training. Cognitive and mental health impairments also did not improve. The finding addresses this exercise comparison and setting; it does not establish that exercise has no value or that the programs are equivalent.
The abstract does not report a between-group effect estimate or confidence interval for the primary outcome. Its conclusions concern participants who continued cannabis use, and some did not complete the program.
What researchers found
Composite MRI measure of hippocampal integrity
Interval training versus strength and resistance training over 12 weeks; the abstract reports no increase in either group, without a between-group effect estimate.
What the primary outcome captured
Researchers combined MRI measures of hippocampal volume, fractional anisotropy, and N-acetylaspartate into a single outcome. Cognitive and mental health measures were assessed separately, so the brain imaging result should not be treated as a clinical benefit.
Participation was possible
Most participants completed the supervised program, showing that regular exercise participation was feasible in this group. The authors also describe a possible role in reducing cannabis craving, but the abstract supplies no numerical craving results.
The original publication
High-Intensity Exercise and Hippocampal Integrity in Adults With Cannabis Use Disorder: A Randomized Clinical Trial.
Richardson KE, Suo C, Albertella L et al.
JAMA Psychiatry · 2025
- PubMed ID
- 40928796
- Record checked
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