Story perspectives
UK Study: Cannabis Users Show Larger Brains, Better Memory
2/8/2026
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Story summary
- A UK study of 26,362 adults aged 40 to 77 finds cannabis users have larger brain volumes and better memory and learning.
- The findings challenge previous assumptions that cannabis negatively affects cognition.
- Heavy cannabis use is linked to lower brain volume in certain areas, suggesting moderation may be important.
- Lead author Dr. Anika Guha cautions that cannabis effects are complex and notes further research is underway.
