Smoking high potency ‘skunk-like’ cannabis can damage a crucial part of the brain responsible for communication between the two brain hemispheres, according to a new study by scientists from King’s College London and Sapienza University of Rome.

Researchers have known for some time that long-term cannabis use increases the risk of psychosis, and recent evidence suggests that alterations in brain function and structure may be responsible for this greater vulnerability. However, this new research, published in Psychological Medicine, is the first to examine the effect of cannabis potency on brain structure.

Exploring the impact of cannabis potency is particularly important since today’s high potency ‘skunk-like’products have been shown to contain higher proportions of Δ9-tetrahydrocannabinol (THC) than they did around a decade ago.

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