Quote:
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.