Home / People / Peter GrinspoonPrefrontal Cortex and Putamen Grey Matter Alterations in Cannabis and Tobacco UsersPeter GrinspoonFri, Aug 5Regular cannabis users who also smoked tobacco cigarettes showed altered GMV patterns relative to controls. However, a similar pattern of GMV differences was also seen between regular tobacco users that did not use cannabis. (ergo, tobacco, not #cannabis) https://t.co/J4buPzKbov9Read More Discover Peter GrinspoonNewsAddictionCannabisDispensaryHealthOpioidsPsychedelicsScience