Dazzan said that when they looked at the corpus callosum of those who smoke high-strength cannabis, they found that there was a significant difference in the white matter compared to people who have never tried the drug, and people who smoke low-strength cannabis. The THC chemical acts on cannabinoid receptors which the corpus callosum contains. The team utilized two scanning methods to examine the corpus callosum in the brains of 56 patients who reportedly experienced a first episode of psychosis, and 43 healthy participants from the local community. One method required the use of diffusion tensor imaging (DTI) while the...