PEOPLE can brush their teeth as much as they like, but our mouths will never be as healthy as those of our ancient ancestors.
Modern food, particularly processed sugar and flour, has decreased the amount of good bacteria in the human mouth, allowing bad bacteria to take over, which results in tooth decay and gum disease.
The human mouth is in “a permanent state of disease”, says Professor Alan Cooper, director of the University of Adelaide Centre for Ancient DNA (ACAD).
A team led by Prof Cooper’s centre has published research in the journal Nature Genetics. They studied teeth from prehistoric northern European human skeletons and found oral bacteria in modern man are much less diverse than historic populations. Read more.