Facts, exactly what I mean, tell them about the risks associated with their possible actions. How the world might treat them. As for age, guess around the same time they teach sex ed. I think everyone should have access to the same facts, so probably at school. (with the parents permission of course.)

And CBD is Cannabidiol, it's found in hemp and cannabis, it's the 2nd most common active chemical in Cannabis next to THC. The US government owns a patent on it as a neuroprotectant. But it's also shown to help with depression, anxiety, seizures, inflammation, and makes a great anti-psychotic. It it naturally found in mother's breast milk, and helps regulate certain chemicals in the body.