When people hear about oral cancer, they often think first of smoking or chewing tobacco. However, several other risks deserve attention, especially because people who have never used tobacco can still develop the disease.Alcohol And Its Often-Overlooked Link To Oral CancerOne of the least understood risk factors is alcohol consumption. Although alcohol is commonly linked to liver disease, its impact on oral cancer risk is also important.Alcohol can damage the tissue lining of the mouth through the production of acetaldehyde, a chemical compound that interferes with the cells' ability to repair themselves. It can also dry and irritate the lining of the mouth, making it more vulnerable to other carcinogens. This risk increases with consistent, regular alcohol use. In combination with tobacco, alcohol can further increase the absorption of carcinogens into oral tissues.Also read: Indian Doctors Find Safer Chemotherapy Regimen For Penile Cancer: Why It MattersAreca Nut, HPV And Other Risks To KnowAreca nut is another important risk factor and is considered carcinogenic. It may be consumed as supari, gutkha or paan. Regular chewing can cause oral submucous fibrosis, a condition that causes progressive stiffness of the mouth and significantly increases the risk of oral cancer.Human papillomavirus (HPV), particularly certain high-risk strains, is another recognised cause of throat and oropharyngeal cancers. Chronic irritation from sharp teeth, damaged dental crowns or ill-fitting dentures may also warrant attention.Certain chronic inflammatory conditions of the mouth, such as oral lichen planus, can cause persistent lesions and require regular monitoring, particularly when symptoms or the appearance of the lesions change. Why Sun Exposure Can Also Affect Oral Cancer RiskSun exposure is another lesser-known risk, particularly for lip cancer. People who work outdoors without adequate protection can accumulate significant UV exposure over many years.Most importantly, the mouth should be monitored whenever something unusual appears. A mouth ulcer that persists for more than two weeks, red or white patches, unexplained bleeding, difficulty swallowing, numbness, or a lump in the mouth or neck should be evaluated by a doctor.Quitting smoking remains crucial for cancer prevention, but protecting against oral cancer requires looking beyond tobacco and recognising the less obvious risks as well.