Marcus - you know how to research this as well as anyone.... but I did a search and called around. No published evidence. Infections? Yes. Hyperkeratosis? Yes. Cancer... nothing to support that. He would have to be one of those that believes that chronic irritation can cause cancer, which the evidence is very weak on.


Brian, stage 4 oral cancer survivor. OCF Founder and Director. The first responsibility of a leader is to define reality. The last is to say thank you. In between, the leader is a servant.