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Updated: May 21, 2026

Brain Morphology of Cannabis Users With or Without Psychosis: A Pilot MRI Study
Published on: August 18, 2020
Cannabis use and psychosis: theme introduction
Giovanni Martinotti1, Giuseppe Di Iorio, Gianna Sepede
1Department of Neuroscience and Imaging, G. d' Annunzio University, Chieti, Italy. giovanni.martinotti@gmail.com
Cannabis use is linked to a higher risk of psychosis, particularly schizophrenia, in vulnerable individuals. Early recognition of basic symptoms in users may aid prevention strategies for psychosis onset.
Area of Science:
- Neuroscience
- Psychiatry
- Genetics
Background:
- Cannabis is a widely used substance with established links to psychosis.
- Chronic use, especially of synthetic varieties, may trigger schizophrenia in susceptible individuals.
- The precise neurobiological pathways remain unclear.
Purpose of the Study:
- To review the clinical and pathophysiological links between cannabis use and psychosis onset.
- To highlight the role of genetic-environmental interactions.
- To discuss the significance of basic symptoms and potential treatments.
Main Methods:
- Literature review integrating epidemiological and neuroscientific evidence.
- Exploration of genetic and environmental factors.
- Discussion of basic symptoms and pharmacological interventions.
Main Results:
- A strong association exists between cannabis use and increased psychosis risk.
- Genetic-environmental interactions, including childhood trauma, are implicated.
- Basic symptoms may serve as early markers for schizophrenia development.
Conclusions:
- Cannabis use poses a significant risk for psychosis and schizophrenia.
- Further research is needed on differential cannabis effects and treatment options.
- Recognizing basic symptoms is crucial for prevention efforts.
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