Explore physician David Casarett's skeptical investigation into medical marijuana in this 15-minute TED Talk. Discover surprising findings about the current state of research, patient control, and education in medical marijuana dispensaries. Learn about the potential lessons mainstream medicine could adopt from these practices, including giving patients more control and prioritizing their needs. Gain insights into the challenges and opportunities in the field of medical cannabis, and understand why Casarett advocates for further evidence-based research and improved patient-centered approaches in healthcare.