High-Potency Marijuana May Damage Nerve Fibers in Brain, Study Suggests

Partnership for Drug-Free Kids, December 3, 2015

"A new study suggests smoking high-potency marijuana may cause damage to nerve fibers responsible for communication between the brain’s two hemispheres.

The study included MRI scans of 99 people, including some who were diagnosed with psychosis, HealthDay reports. The researchers found an association between frequent use of high-potency marijuana and damage to the corpus callosum, which is responsible for communication between the brain’s left and right hemispheres.

The corpus callosum is especially rich in cannabinoid receptors. THC, the psychoactive ingredient in marijuana, acts on these receptors." Read more

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