Above is one of multiple videos in a series where a medical doctor speaks on marijuana psychosis and his experiences as a medical professional. He speaks on how marijuana is likely the main cause of many of his patients issues. I would encourage you to also view the links listed below of a few of the other videos:
Marijuana Impacts on a Colorado Community: An Interview with Dr. Roberts
Marijuana Misconceptions: An Interview with Dr. Roberts
VOTE "DO NOT ALLOW" CANNABIS SALES IN WEST RICHLAND!