Buo Lai En
Misleading and disappointing
To read the headline of this article, one would expect a definitive study showing marijuana to be implicated in pervasive impairment of mental functioning. But it turns out that the study was flawed in a way all too reminiscent of past studies designed to deter cannabis use rather than to understand it: It didn't use cannabis as such at all; rather, it used something held to be equivalent to tetrahydrocannabinol (by whose measure is not clear) in the absence of the other compounds found in the actual plant.
This should be sufficient in itself to discredit the study in all but the most deeply prejudiced opinion, for it has been known for some time that THC *in isolation* can be harmful; it is the full bouquet of naturally occurring cannabinoids, however, that marijuana users actually consume, and that is a far different matter. Rather than exacerbating the potential harm done by THC, these compounds tend to mitigate it, and in combination have never been convincingly proven harmful in any way.
One is tempted to conclude that this site is more interested in getting page views with alarming headlines than in presenting the truth.