Chews tobacco since more than 12 years, intake is less now when intake was more, he had little difficulty in opening mouth wide n eating spicy cancer?

You?: If you are talking about yourself, you are somewhat young for oral cancer BUT you should do 2 things: first, please visit a dentist or your local doc. Cancer is rare at your age but not impossible. Second: please quit using any and all tobacco products. You are setting yourself to develop all sorts of tobacco related cancers plus bad tooth and gum disease. Please do it ASAP.