Cannabis smoke has more toxins?

[Devious]

That doesn't have to be a physical addiction, I'd say you were mentally dependent on it for a while. Psychological dependency definitely occurs with weed.

well psychological addictions don't cause physical withdrawl symptoms, like as Duke said, lack of sleep, lack of appetite, acute sleepiness during the day, etc. i could see that my use of it was more and more becoming a physical need, i literally couldn't go thru an entire day without any. when i did stop smoking for a while it took me over a month before my sleep pattern started to recover.