Brushing teeth regularly can reduce the danger of head and neck cancer

Research has established that high levels of bacteria linked to gum disease raise the risk of the illness as well as diabetes and high blood pressure.

US scientists have now found that a dozen species lurking in the human mouth increase the risk of head and neck cancer and say that their findings underline the importance of maintaining good oral hygiene – including brushing teeth twice a day and making regular trips to the dentist.

Professor Richard Hayes, co-author of the research and an expert in population health at New York University, said: "Our results offer yet another reason to keep up good oral hygiene habits.

"Brushing your teeth and flossing may not only help prevent periodontal disease, but also may protect against head and neck cancer."

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