A new multisite study published in Nature Mental Health found that using cannabis and tobacco together increases the risk of developing psychotic disorders like schizophrenia among those considered high risk.
Researchers led by Heather Ward, MD, assistant professor of Psychiatry and Behavioral Sciences and director of Neuromodulation Research at Vanderbilt Health, analyzed data from more than 1,000 participants in the North American Prodrome Longitudinal Study, which tracks individuals at “clinical high risk” for psychosis. These individuals often experience mild or early symptoms but have not yet developed a full psychotic disorder.
