Please don't tell me that chewing is bad. I know it is, but since I ran out of money for cigs, I need a different nicotine fill. (I'm saving money for e-cigs) I've been chewing for a little over a week now for the first time. How long does it take for the precancerous symptoms to appear? I know they are red/white spots in your mouth, but how long will it take for them to show up? I think I'll probably be doing a tin every two weeks or so due to my limited means of income.