alt Hacker NewsThe studies cited by this metastudy all suffer from the same issue: They aren't studying the cannabis plant at all and even if they are, it's not in the chemovars (chemical makeups) that real consumers are actually consuming - due to cannabis sourcing issues stemming from cannabis's continued illegality.
For randomized controlled trials, even in "legal" states, university scientists can't just walk into a dispensary and buy cannabis to then administer to test subjects.
That's Post-Prohibition for you.
As far as I can tell, most (EDITED FROM ALL) of the studies utilize isolates - and not necessarily in conjunction.
For instance, none of the 6 anxiety studies included in this metastudy used THC and CBD together.
The headline could read instead: No evidence cannabinoid isolates help anxiety, depression, or PTSD.
Cannabis advocates are the first to mention the entourage effect. Cannabis prohibitionists on the other hand, love nothing more than to cite incomplete science.
Replies
Yeah, I noticed this too. Canadian universities have been studying cannabis use using actual cannabis, so I'm not sure why this metastudy considered anything else. "We need to publish something" perhaps.
>The headline could read instead: No evidence cannabinoid isolates help anxiety, depression, or PTSD.
There’s no evidence that what they tested with was pure THC isolates. If they’re using cannabis in plant form, even if it was bred for higher thc content, there is still cbd.
Using quantified isolates is the correct way to do a controlled study. Dosing is important.
Claims that you need a special combination of exactly the right strains are just a way to move the goalposts forever. They could study 10 different strains in controlled trials and the same people would show up to dismiss this study because they weren't using some random strain that has some perfect combination of entourage effect.
Using actual plants and smoking would also introduce another major variable, with further claims that the strains they were giving patients were too weak or they were smoking it wrong.
EDIT: I don't have time to read every single citation included, but the claim above that they were all THC or CBD isolates does not appear correct. One randomly selected citation:
> The short-term impact of 3 smoked cannabis preparations versus placebo on PTSD symptoms: a randomized cross-over clinical trial
So the claim above that they didn't investigate smoked cannabis or "entourage effect" is false.