1. Betel nut chewing
Long-term betel nut chewing is the leading risk factor for tongue cancer. Alkaloids such as arecoline have established carcinogenic effects and can cause oral submucous fibrosis and malignant transformation of leukoplakia.
2. Smoking
Carcinogens in tobacco such as nicotine and tar directly irritate the tongue mucosa. About 90% of oral cancer patients have a long-term smoking history.
3. Alcohol consumption factors
Long-term heavy drinking increases tongue cancer risk. Alcohol damages the oral mucosal barrier and promotes carcinogen absorption, with a marked synergistic effect with smoking.
4. Chronic irritation
Sharp residual tooth roots, poorly fitted dentures, and metal restorations chronically rub and irritate the tongue mucosa, potentially causing chronic inflammation and cancer.
5. Oral hygiene
Long-standing poor oral hygiene promotes bacterial and fungal growth and formation of carcinogens such as nitrosamines, increasing malignant transformation risk in the tongue mucosa.
6. Nutritional deficiencies
Insufficient intake of fresh fruits and vegetables leads to vitamin and trace element deficiencies; iron deficiency, in particular, can reduce the resistance of the oral mucosa and promote carcinogenesis.
7. Precancerous lesions
Long-standing precancerous lesions such as oral leukoplakia, lichen planus, and submucous fibrosis may become malignant, with higher risk when epithelial dysplasia is present.
Conclusion
Tongue cancer results from the combined effects of betel nut chewing, smoking, drinking, and other factors and can seriously impair speech and eating. Giving up betel nuts, tobacco, and alcohol, maintaining oral hygiene, and regular examinations for early detection and timely intervention are essential.
