Dr. Sanjay Gupta says we have been `` systematically misled '' on marijuana . It is a miserable pain that 's tough to treat . The DEA has a long history of using scare tactics to get people addicted and then they use the fear as an excuse for their actions. Most recent research on marijuana has been on its negative effects , Gupta says . Studies on marijuana require approval from National Institute on Drug Abuse .
Dr. Sanjay Gupta says we have been `` systematically misled '' on marijuana . The DEA has a long history of using scare tactics to get people addicted and then they use the fear as an excuse for their actions. Most recent research on marijuana has been on its negative effects , Gupta says . Studies on marijuana require approval from National Institute on Drug Abuse .