Leading NIDA researcher Marilyn Huestis admits that there is “no direct correlation between driving impairment and THC concentration” and that “cannabis tolerance may develop in frequent smokers, with less impairment than for occasional smokers with similar THC concentrations.”
About Johnny Green
Johnny Green is a marijuana activist from Oregon. He has a Bachelor's Degree in Public Policy. Follow Johnny Green on Facebook and Twitter. Also, feel free to email any concerns.