The exact cause is unknown. Smoking and other tobacco use are associated with most cases of oral cancer. Smoke and heat from cigarettes , cigars , and pipes, irritate the mucous membranes of the mouth. Use of chewing tobacco or snuff causes irritation from direct contact with the mucous membranes. Heavy alcohol use is another high-risk activity associated with oral cancer.
Many oral cancers begin as leukoplakia or mouth ulcers .
Men are affected twice as often as women, particularly men over 40 years old. The information provided herein should not be used for diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Inc. Any duplication or distribution of the information contained herein is strictly prohibited. Inc. All rights reserved.