A big thing now is Chemoprevntion, which could be better named as cancer prevention since no chemo is actually used. Having frequent dental exams, ENT visits, proper oral care, stop or reduce drinking, smoking, 2nd hand smoke and exposure to other carcinogens, irritants. Stop using alcohol mouth wash, increase fruits and vegetables in the diet, especially greens, critic fruits, and those containing antioxidants, beta carotene. Stay healthy, maintain proper body weight.