Medically reviewed by Dr. Muralidhar Muddusetty, Surgical Oncologist · Last reviewed June 2026
Tobacco — whether chewed as gutkha, khaini and paan, or smoked as bidis and cigarettes — is the single biggest cause of oral cancer in India. The encouraging part: this risk is something you can act on. Stopping tobacco, watching for early signs, and acting on a non-healing mouth ulcer are the most effective steps you can take.
Tobacco contains chemicals that damage the cells lining the mouth. When tobacco is chewed — as gutkha, zarda, khaini, mawa or paan — it sits against the inner cheek, gum or tongue for long periods, and those harmful chemicals are in direct, repeated contact with the lining. When tobacco is smoked — as bidis, cigarettes, hookah or chillum — the smoke passes over the same tissues. Over years, this repeated injury can change healthy cells into cancer cells.
Most oral cancers are squamous cell carcinomas, which arise from the thin, flat cells lining the inside of the mouth. Tobacco use — smoked or chewed, and frequently combined with alcohol or areca-nut (supari) — is linked to the great majority of these cancers in India. The good news is that the mouth is one of the few parts of the body you can examine yourself, and that stopping tobacco lowers your risk over time.
Gutkha, paan-with-tobacco and areca-nut are the single biggest drivers of oral cancer in Telangana and Andhra Pradesh — and they affect women as well as men. Many people in the region who have never smoked use chewing tobacco daily, and account for a significant share of oral cancers presenting at advanced stages. (Source: ICMR / National Cancer Registry Programme.)
Every form of tobacco raises oral cancer risk. Chewed (smokeless) tobacco is the dominant driver in India because it sits directly against the lining of the mouth.
Smokeless tobacco mixtures held in the cheek or against the gum for long periods. Because the tobacco stays in direct contact with the lining, these products are strongly associated with cancers of the inner cheek (buccal mucosa) and gum. See our detailed page on gutkha and mouth cancer for more.
Betel-quid (paan) made with tobacco and areca-nut is a common habit in this region. It combines two harmful agents and is linked to both oral cancer and the precancerous condition oral submucous fibrosis.
Areca-nut (supari), even without tobacco, is itself harmful. It is the main cause of oral submucous fibrosis — a stiffening of the cheeks that progresses to oral cancer in a meaningful proportion of cases.
Smoking exposes the mouth, lips and throat to harmful smoke. Bidis, cigarettes, hookah and chillum all raise the risk of oral and oropharyngeal cancers, and the risk multiplies when smoking is combined with alcohol.
Using tobacco and drinking heavily together is more harmful than either alone. Alcohol helps the harmful chemicals in tobacco penetrate the lining of the mouth, sharply increasing oral cancer risk.
For detailed information on diagnosis and treatment options, see our dedicated page on oral cancer treatment in Hyderabad.
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Early action means simpler treatment, better outcomes, and lower cost. Our oncologists see tobacco-related oral cancers every day.
If you use any form of tobacco or areca-nut, watch for any of the following — especially if they persist for more than 2 weeks:
Outcomes published by ICMR/NCRP for India versus 1-year survival rates achieved at CION across our oncology network.
*1-year survival rates. Source: ICMR / National Cancer Registry Programme (NCRP) national averages compared with CION patient outcomes across the network.
Stopping all forms of tobacco and areca-nut is the single most effective way to lower your oral cancer risk — and it is never too late. Risk falls gradually after you quit, even after many years of use. Limiting alcohol, treating chronic sharp tooth edges or ill-fitting dentures, maintaining good oral hygiene, and doing a 2-minute monthly self-examination of the mouth in front of a mirror all add further protection.
If you have a daily chewing or smoking habit and notice a non-healing ulcer, a white or red patch, or restricted mouth opening, see an oncologist without delay. A short specialist consultation and the right diagnostic test — imaging, endoscopy, or biopsy as appropriate — is usually enough to confirm or rule out cancer. Early action is always easier than catching up later.
A non-healing mouth ulcer, a white or red patch, or restricted mouth opening? Book a free consultation at your nearest CION Cancer Clinic.
Our NABH-accredited centres across Hyderabad deliver evidence-based oral cancer care — from biopsy and staging imaging through to wide local excision, neck dissection, reconstructive flap surgery, advanced radiation therapy (IMRT/IGRT), chemotherapy and immunotherapy — guided by NCCN and ESMO protocols and reviewed for every patient by a multidisciplinary tumour board with surgical, medical and radiation oncology input.
For a detailed walk-through of oral cancer diagnosis, treatment options, costs, and our specialist team, see our dedicated page on oral cancer treatment in Hyderabad.
Disclaimer: This page is intended for general informational purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult a qualified oncologist for guidance specific to your medical condition. Content on this page is periodically reviewed and updated by CION's medical team in accordance with current clinical guidelines.
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Start Your Story. Book Free Consultation.Yes. Gutkha, zarda, khaini, mawa, paan with tobacco and areca-nut (supari) are all major causes of oral cancer in India. Chewing tobacco causes oral cancer through prolonged direct contact with the cheek lining, and areca-nut on its own causes oral submucous fibrosis — a precancerous condition that progresses to oral cancer in a significant proportion of cases. Stopping these habits, even after years of use, dramatically reduces the risk.
Yes. Smoked tobacco — bidis, cigarettes, hookah and chillum — exposes the mouth, lips and throat to harmful smoke and is a well-established cause of oral and oropharyngeal cancers. The risk is even higher when smoking is combined with heavy alcohol use, because alcohol helps the harmful chemicals in tobacco penetrate the lining of the mouth.
Yes. Stopping all forms of tobacco and areca-nut is the single most effective way to lower your oral cancer risk, and the risk falls gradually after you quit — even after many years of use. It is never too late to stop. Quitting also lowers the risk of many other cancers and improves overall health, so it is always worth doing.
Oral submucous fibrosis is a precancerous condition almost entirely caused by chronic areca-nut and gutkha use. It progressively stiffens the lining of the cheeks, making it harder to open the mouth wide, and is often accompanied by a burning sensation when eating spicy food. Without intervention, OSMF can progress to oral cancer. Anyone with restricted mouth opening or a daily chewing habit should be assessed by an oncologist.
The most common early sign is a mouth ulcer, sore or patch that does not heal within 2 weeks. Other early clues include a white or red patch inside the mouth, a thickened lump felt inside the cheek or under the tongue, restricted mouth opening, or unexplained loose teeth. Persistent one-sided ear pain without any ear infection is another important warning sign. If you use tobacco or areca-nut and notice any of these, see an oncologist without delay.
