Parents “not ready” for the reality of teen cannabis use

That sense of disbelief – pot wouldn’t do this – is prevalent in parents who saw their teens become psychotic. But a typical joint decades ago had less than 4% THC – dried cannabis flower now averages closer to 15-20% THC, while THC-concentrated oils, edibles, waxes and crystals often contain 40-95% THC, potency that can ravage a developing adolescent brain.