In the past, the tobacco industry reaped enormous profits while denying the harm of cigarettes. History must not repeat itself with a powerful cannabis lobby.
While lawmakers are moving to legalize the recreational use of marijuana in many states, psychological science is demonstrating its serious risks to the mental health of youth and adults.
The use of marijuana has been identified in numerous other international studies as a major cause of psychosis, violence, and crime. Three meta-analyses have concluded that cannabis use is associated with a three-fold increased risk of developing psychosis, primarily with paranoid symptoms that can be associated with the risk of violent reactions (Moore T.H., et al., 2007).