<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi doc,I have been chewing gutkha tobacco masala since last 17 years.Now i have problem in my gum.can u tell me wheter i have started to suffer from cancer?please help me.i have to consult a doctor today.I have headache at my left head.Thanks Rajeev  <response>: Hi, Thanks for asking the query, Tobacco contains carcinogenic materials and chewing of tobacco can eventually lead to gum, periodontal diseases and even cancer. Before jumping to any conclusion, I would suggest you to consult to an oral surgeon get a checkup done, take an OPG radiograph also a biopsy is required. Take a course of multivitamin supplements. Take lukewarm saline and antiseptic mouthwash rinses. Take care! 