I don't know if it's necessarily because it's more potent. It's simply because it hinders the person's cognitive development, which causes them to undertake risky behaviours because they lack judgment. Reasoning and judgment are the two principal cognitive impairments. That's why they go from using that to.... And if they have an underlying disorder, if they are ADD, as a sizable proportion of teenage cannabis abusers are, and they're not treated, then they need to calm themselves. Once you treat the ADD with the appropriate long-acting stimulant medication that helps them to learn, concentrate, and feel good about themselves, they stop using.
On September 13th, 2017. See this statement in context.