The only sources portraying that marijuana actually stunts growth is the AADAC programs and shit. 80% of statistics are B-S including this one. Statistics can be manipulated to show whatever the person who is making it wants it to show. The goverment comes up with half this stuff anyway to discourage drug use among minors. But from the information sheets on drugs that are not arguing for eaither side, the only drug proven to stunt growth is alchohol binge drinking at a young age and steroids. They both can cause certain testosterones to stop being 'manufactured' within the brain and CAN slow puberty and not enable someone to reach their maximum height.