New Report Finds Highest Levels of THC in U.S. Marijuana to Date
"Today, the Office of National Drug Control Policy (ONDCP) released the latest analysis from the University of Mississippi's Potency Monitoring Project, which revealed levels of THC - the psychoactive ingredient in marijuana - have reached the highest-ever levels since scientific analysis of the drug began in the late 1970s. According to the latest data on marijuana samples analyzed to date, the average amount of THC in seized samples has reached a new high of 10.1 percent. This compares to an average of just under 4 percent reported in 1983 and represents more than a doubling in the potency of the drug since that time..."

New report finds highest-ever levels of THC in U.S. marijuana
"Today, the Office of National Drug Control Policy (ONDCP) and the National Institute on Drug Abuse (NIDA) released the latest analysis from the University of Mississippi's Potency Monitoring Project, which revealed that levels of THC - the psychoactive ingredient in marijuana - have reached the highest-ever amounts since scientific analysis of the drug began in the late 1970s. According to the latest data on marijuana samples analyzed to date, the average amount of THC in seized samples has reached a new high of 9.6 percent. This compares to an average of just under 4 percent reported in 1983 and represents more than a doubling in the potency of the drug since that time."