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Table 2 Risk factors for Oral Cancer

From: Oral cancer awareness of undergraduate medical and dental students

Tobacco smoking Dietary factors
Smokeless tobacco use    Diet low in iron
Betel quid chewing    Diet low in vitamin A
Alcohol consumption    Diet low in vitamin C
UV light exposure    High fat diet
Viral factors Dental factors
Immunosuppression    Chronic irritation from jagged teeth
Chronic infection  
Occupation    'Poor dental condition' (poor oral hygiene/number of missing teeth >= 11)