Originally Posted by: AkiraApparantly it can have some mental effect on teenagers, being as their brain is not fully developed or something.

Current belief is that it can accelerate conditions like schizophrenia, I'm not sure if they think it can cause it, but it seems to help it along...

From my perspective, as a reasonably long term smoker, I do find I spend more time in extremes of emotion - either really happy or really down, rather than just rolling along in the middle like I probably should.

I'll never know if it's the weed or my personality! :D I am working on it though....