The authors of the study add that while states continue legalizing cannabis for both recreational and medical use, doctors must have adequate training to address questions from patients. “More medical students are now getting better training about opioids, for example,” Evanoff said. “We talk about how those drugs can affect every organ system in the body, and we learn how to discuss the risks and benefits with patients. But if a patient were to ask about medical marijuana, most medical students wouldn’t know what to say.”