text:  Lots of teens and young people get high. But then I found out how powerful today's concentrates are. I couldn't believe it. It's far more powerful than weed from the 70s, 80s, and 90s. When teens use vapes or dabs, the potency can be 80 to 100% THC. THC can cause addiction, hallucinations, paranoia, anxiety, and cannabis-induced psychosis in youth.