ASAM Public Policy Statement on Marijuana, Cannabinoids and Legalization

• Prenatal exposure to marijuana has been shown to be predictive of psychotic symptoms in young adulthood.
• Monitoring the Future survey reported a five-year decline in the perceived harm of regularly smoking marijuana, from 52.4% of high school seniors to 36.1%
• Marijuana is the most widely used illegal drug in the United States and it is estimated that it is used by 61% of all persons suffering from a substance use disorder related to drugs other than alcohol.
• The risk of developing addiction associated with cannabis use has been reported to increase to about 17% among those who start using marijuana in adolescence, and to 25-50% among those who smoke marijuana daily.
• Smoke from marijuana combustion has been shown to contain a number of carcinogens and cocarcinogens, as well as many of the toxins, irritants, and carcinogens as tobacco smoke. 
• Marijuana-infused edibles account for 45% of the legal marijuana marketplace.
• AMA Marijuana has a high potential for abuse. It has no scientifically proven, currently accepted medical use for preventing or treating any disease process in the United States.

Number Using Opioids and Marijuana on the Rise

Chart: Colorado among states with growing heroin, prescription drug abuse problem 

Consistent with the past, in 2014 still only 47 percent of operators involved in traffic deaths were tested for drug impairment.