You can still do a randomized trial and that's the one that wouldn't pass the IRB.
(Or, use high school freshman for the study and really convincing upperclassmen as actors to convince them it is a real bag.)
There aren't many studies on what are the real impacts of CBD.
Are we to presume that the high itself isn't potentially a causative factor?
I mean, it kind of does. If you want to design intervention, it helps to know which causes the other to a greater degree.
But, should we (the gov) spend 10 million dollars on social services to prevent people's lives from going to hell, should we spend 10 million dollars on anti-alcohol addiction services or should we spend it half and half, are questions we as a society need answers to.
Sometimes we’re stuck with “I don’t know” and recognizing that is IMO important.
So, I know.
Clearly, smoking a shit ton is bad for people with marginal mental health or marginal emotional health.
Clearly, weed is good
You're really going to call for a double blind study here checking if excessive cannabis is bad for people conditional on their lives falling apart? How do you propose to get that past an ethics board?