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He added: “Smiling triggers the release of dopamine which helps to regulate your immune system.
“As the level of dopamine rises, the number of antibodies in the body increases, which is crucial to keeping your mouth healthy, and also to staying fit and well in general.”
According to Bupa, 90 percent of Brits have some form of gum disease, even if only a small amount.
Flossing and brushing your teeth every day will always be an essential part of the fight against gum disease, but smiling might give your dental health the “boost” it needs.
