i think when you mess with your body using drugs, it can change "you" even if it is marijuana. I used medicinal marijuana for minor back pain, and insomnia and mostly for migraines. This is a prescribed drug for me, as before i would be on lots of other drugs. Ive even abused these drugs as well. I have found that no matter what the drug of choice, it is a drug and drugs are physically addicting. When we mess with our bodys dopeamines and endorphins, we are really setting our selfs up for disaster.. its harder and harder the more you use to get that happy feeling, when the bodys releases dopeamines and endorphins. now normal tasks as before, normally your body would release these, like for instance after taking a run, a sense of accomplishment. When you use marijuana, you lower the bodys ability to release our bodys natural way for making us happy. We pretty much have to use, to get that feeling again. The high happy feeling you get right after a toke. Once you mess with this, you mess with addiction. Your body needs that drug to release these now, cus normal everyday things which use release, are not enough to any more. How would that not be a physical addiction? It physically changes the body, it physically changes the way a person thinks and their decisions. The release of dopeamines and endorphins is now all screwd up, from using, and the only thing that can fix it is time. Lots and lots of sober time.. sorry to say. take some drug class's, like the government makes me..