Research Article
Oral Cancer Awareness and Knowledge in the City of Valongo, Portugal
Table 3
Most risk factors or causes mentioned for oral cancer.
| Causes of cancer | () | (%) |
| Tobacco | 539 | 89.5 | Reduced oral hygiene | 501 | 83.2 | Infections in the teeth | 492 | 81.7 | Alcohol | 381 | 63.3 | Reduced intake fruit and vegetables | 295 | 49 | Sun exposure | 294 | 48.8 | Car smoke | 283 | 47 | Dental treatment in dentists | 194 | 32.2 | Coffee | 137 | 22.8 | Close contact with another cancer patient | 118 | 19.6 |
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