An oft-cited but seldom examined argument against the use and commonplace acceptance (screw legalization; I don't want Monsanto producing my cannabis) of weed is that it can damage the brains of people under 25 years of age. I assume there's some study somewhere that gives credence to this claim, but before I go and look it up, has anyone else conducted a critical examination of this claim? In particular, I'm wondering if they consider "brain damage" to include the things they normally diagnose perfectly healthy kids with and prescribe neurotoxins for.
Image source: Myself, using CC0 vector art from Pixabay