The Science behind Marijuana (Cannabis), Marijuana mechanism of action. Source of information: National Institute on Drug Abuse; National Institutes of Health; U.S. Department of Health and Human Services: https://www.drugabuse.gov/publications/drugfacts/marijuana This video and other related images/videos (in HD) are available for instant download licensing here : https://www.alilamedicalmedia.com/-/galleries/images-videos-by-medical-specialties/neurology Voice by: Sue Stern Animation ©Alila Medical Media. All