I've been on and off this train. I smoked in high school, not at all in college, again in my twenties, not at all in my thirties, started again recently. I definitely have anxiety but I would not say the pot has triggered panic attacks or otherwise brought on or amplified the anxiety. That said, while the pot has a nice numbing effect for a couple hours, it certainly has not made my anxiety better and I definitely sleep much better when I haven't consumed any THC. Same goes for alcohol.