An article was published recently in the Journal of Neuroscience related to abnormal changes in the brain associated with the recreational use of marijuana. The degree of brain abnormalities in these regions is directly related to the number of joints a person smoked per week. The more joints a person smoked, the more abnormal the shape, volume and density of the brain regions. According to Dr. Breiter, this study raises a strong challenge to the idea that casual marijuana use isn’t associated with negative consequences. Some of the participants “used marijuana to get high once or twice a week. People think a little recreational use shouldn’t cause a problem if someone is doing okay with work or school. Our data directly says this is not the case.” Part 3 tomorrow.