Daughters3, My hubby chewed for 30 years!The Dr. said they couldn't be possitive that the Chewing caused his cancer, he said it was just what happened. but the Specialist we went to in the very beginning said it takes up to 25 years for this to show up so, I guess its just who you talk to. I am sure this didn't help in any way. I just get sick to my stomach when I see these young kids chewing, If they only knew what could happen. But then my husband wouldn't listen eaither, You always think it won't happen to me. Two of his friends had cancer on the toungue and on the lip. It did make him go to the dentist but everything was clear then. So,,, lets hope by sharing our stories we can help someone else.