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Updated: May 27, 2026

Brain Morphology of Cannabis Users With or Without Psychosis: A Pilot MRI Study
Published on: August 18, 2020
Long term effects of cannabis
B B Sethi1, J K Trivedi, H Singh
1Professor and Head, Department of Psychiatry, K. G.'s Medical College, Lucknow.
Chronic cannabis use in 50 individuals showed minimal cognitive deficits, with only 12% exhibiting potential issues. The study found no significant physical illness or social breakdown among long-term cannabis users.
Area of Science:
- Neuroscience
- Psychology
- Public Health
Background:
- Long-term cannabis use is prevalent, raising questions about its health impacts.
- Understanding the effects of chronic cannabis consumption on cognitive, physical, and social well-being is crucial.
Purpose of the Study:
- To assess the physical, mental, cognitive, and socio-economic health aspects of chronic cannabis users.
- To investigate potential cognitive deficiencies and social impacts associated with sustained cannabis use.
Main Methods:
- A cohort of 50 chronic cannabis users was evaluated.
- Standardized assessments including the Wechsler Memory Scale (WMS), Bhatia Battery of intelligence, and Bender Gestalt Test (BGT) were administered.
Main Results:
- Only 12% of participants showed indicators suggestive of cognitive deficiency.
- No significant physical illnesses were detected in the study group.
- No social breakdown phenomena were observed among the chronic cannabis users.
Conclusions:
- Chronic cannabis use does not appear to be associated with widespread cognitive impairment or significant physical health deterioration.
- The findings suggest that long-term cannabis consumption may not lead to social breakdown in the studied population.
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