"Medical Cannabis": Advising Patients While Navigating Medical Ethics and Limited Evidence.

Cannabis is increasingly legalized in more areas of the USA and marketed under the misnomer "medical cannabis." Yet, there are no official dosing guidelines or approved medical uses for plant cannabis by the Food and Drug Administration. Due to significant federal barriers, research on efficacy, safety, and adverse effects of cannabis is limited. Patients are interested in cannabis as potential treatment of medical issues and/or symptoms and clinicians should include a discussion of the risks of cannabis consumption. However, many risks are not yet known, and clinicians might be unaware of the emerging literature. This perspective summarizes the potential harms of cannabis, including the risk of cannabis use disorder, while providing a framework grounded in principles of medical ethics to educate patients on cannabis.