Modern diet is ruining our teeth
When it comes to our teeth, humans haven’t evolved so well. Researchers from the University of Adelaide's Australian Centre for Ancient DNA (ACAD), the University of Aberdeen (Dept of Archeology), Scotland, and the Wellcome Trust Sanger Institute, Cambridge, England have found that thanks to modern diets, our oral health isn’t what it used to be.
The scientists found that modern mouths live in a permanent state of disease, a product of the introduction of sugar into the diet. Whereas historic populations, dating back 7,500 years until now, relied on hunter-gatherer skills, modern man relies on a more agricultural diet, and that has decreased the diversity of bacteria in the mouth.
The researchers studied calcified dental plaque – tartar – from ancient skeletons and compared the bacteria present to what they found in skeletons from the Bronze Age, medieval times, the Industrial Revolution up to today. They found that as man evolved, so too did his diet, creating a less diverse bacterial environment within the mouth. And researchers believe that may be the reason for the rise of chronic oral diseases.