The issue focused on research studies that found that medical marijuana may help improve medical conditions like Crohn's disease. "We want to study medical marijuana as a treatment for Crohn's disease," Dr. Andrew Knight, the study's lead researcher, told me. "We want to study medical marijuana as a treatment for cancer. We want to study medical marijuana as a treatment for diabetes. We want to study medical marijuana as a treatment for irritable bowel syndrome."

But these studies have been fairly small. And