Legalization of Medicinal Marijuana Has Minimal Impact on Use Patterns in Patients With Inflammatory Bowel Disease.

Background: Patients with inflammatory bowel disease (IBD) have reported use of marijuana to treat symptoms of the disease, yet its classification as a Schedule 1 substance by the federal government has restricted its use. In 2012, Massachusetts legalized medicinal marijuana. We aimed to assess the impact of legalization on use in IBD.