Expatriates may be able to avoid making a claim on their overseas health insurance by becoming aware of the causes of mouth cancer.
According to Dr Henry Clover, deputy chief dental officer at Denplan, tobacco use is the "number one risk factor" in this condition.
When combined with smoking, drinking excessively can make an individual as much as 30 times more likely to suffer from this ailment, he continued.
Other lifestyle choices that are related to this form of cancer include poor nutrition, the expert noted, adding that a diet "low in fruits and vegetables" has also been linked to it.
Human papillomavirus (HPV) is also known to heighten someone's chances of developing this illness, Dr Clover asserted, arguing "there are a lot of risk factors".
HPV has also been found to increase an individual's likelihood of suffering from cervical cancer, as well as cancers affecting the vulva, anus, penis, vagina and oropharynx, or the tongue, tonsils and back of the throat.