Dear Welcome to HCM We understand your concerns I went through your details. I suggest you not to worry much. Addiction, in any form is bad for health. Understanding about addiction is the key. For you, chewing ice cube is not an addiction, but simply an obsession. In addiction, body and mind are involved. In obsession, mostly mind is involved. To remove obsession, you need to kepp yourself engaged in activities which don t need your obsession. If you require more of my help in this aspect, Please post a direct question to me in this website. Make sure that you include every minute details possible. I shall prescribe the needed psychotherapy techniques which should help you cure your condition further. Hope this answers your query. Available for further clarifications. Good luck.