A research team from Harvard School of Public Health in Boston, MA, were the first to report strong evidence on a link between gum disease and pancreatic cancer, back in 2007.

The type of gum inflammation associated with pancreatic cancer in the study was periodontitis, which affects the tissue that support the teeth and can cause loss of bone around the base of the teeth.

The other main kind of gum disease – gingivitis; where the tissue around the teeth becomes inflamed – was not linked to increased cancer risk. However, gingivitis can lead to periodontitis if persistent. Gingivitis happens when bacteria in the plaque around the base of the teeth build up due to bad dental hygiene.