Over the past 33 years, researchers at UM have studied more than 65,000 samples of marijuana seized by law enforcement personnel in all 50 U.S. states. Since 1975, the amount of Tetrahydracannibinol (THC) in the studied marijuana consistently increased, reaching a 30-year high between 2007 and 2008.
Nora Volkow, director of the National Institute on Drug Abuse, said the findings are worrisome because high levels of THC increase the risk of mental impairment and addiction, especially among young people.
Read more http://www.adolescent-substance-abuse.com/marijuana-potency.html.
Labels: marijuana, pot, potency
Posted By: Aspen Education Group