Answering the Libertarian argument for drug legalization

[eman]

Originally Posted by MissSmallAimsSmall

"Heavy marijuana use is associated with residual neuropsychological effects even after a day of supervised abstinence from the drug. However, the question remains open as to whether this impairment is due to a residue of drug in the brain, a withdrawal effect from the drug, or a frank neurotoxic effect of the drug." - The Residual Cognitive Effects of Heavy Marijuana Use in College Students

What is "heavy" marijuana use? 1 joint> 1/4 lb???

[MathGeek]

Originally Posted by eman

What is "heavy" marijuana use? 1 joint> 1/4 lb???

I haven't looked at that exact study, but most studies consider heavy use to be every day or nearly every day when looking at impact over time. Most of these studies depend on participant reported usage rates.

The definition of heavy use is a bit different in studies considering acute impacts such as driving. Most of these studies actually measure the blood THC content and report numbers in ng/ml, thus providing a more quantitative measure of exposure.