A single dose of the non-intoxicating compound of cannabis -- cannabidiol -- can help reduce brain function abnormalities seen in people with psychosis results of a clinical trial led by an Indian-origin doctor has revealed. Brain activity in the people at risk of psychosis remains abnormal compared to the healthy ones. But in people who had cannabidiol the abnormal brain activity was less severe than for those who received a placebo suggesting cannabidiol can help re-adjust brain activity to normal levels. The results suggest that cannabidiol may normalise dysfunction in striatum parahippocampal cortex and midbrain -- brain regions which are critically