Dear Doctor i am in the habbit of using this hans chaap khaini which i use to keep in betwwen by lips .i am using this for the past 10 years. I am not able to quit this habbit. now i feel that i have lost some of the skin tissues ,,will it cause a mouth cancer,,,i feel whenever i use this i feel thirst very often that my mouth & throat dries immediately after spitting this..pls help