It works in a similar way with someone over indulging on food when they are depressed or stressed. While weed isn't an addictive substance, you can become dependent on the dopamine released when you smoke. I have found on several occasions when I had been smoking multiple times a day for a long period of time and I suddenly quit cold turkey, I would get flu like withdrawal symptoms. Hyper sensitivity to temperature changes, aches and pains, irratability, diarrhea and sometimes nausea. The best way to stop using weed without the ill effects is to slowly decrease the amount you intake over time. Or quit cold turkey and use small amounts of weed to alleviate the symptoms of withdrawal. This is actually quite common but requires a fairly heavy usage to become dependent.