The study about the evolution of the human teeth has showed that over the passage of the past 7500 years the humans today have less diverse oral bacteria than the population historically. Scientists have believed and stated that the modern day food has played a major role in the exposure of the human teeth and it is more prone to diseases in these times as compared to the past.

The magazine of Nature Genetics has published a study recently which has been backed by the research of students from the Universities of Aberdeen and Welcome Trust Sanger Institute. The study has shown light on the health consequences of the diet that has evolved over the ages and the behavior of the stone age to the modern day people and how the diet has caused a change in the reaction of the bacteria to the change of the events and what effects it eventually will have once the aspects of these have been weighed.

The studies of the scientists have explained that there were changes of the negative sort as the diets of the human altered with the passage of time and when the humans moved from the category of hunters to the farmers.

The study also claims that a further set of changes evolved when the humans started to manufacture food for their own during the time of the industrial revolution.

Study leader Professor Alan Cooper, ACAD Director, said, “This is the first record of how our evolution over the last 7500 years has impacted the bacteria we carry with us, and the important health consequences.”

“Oral bacteria in modern man are markedly less diverse than historic populations and this is thought to contribute to chronic oral and other disease in post-industrial lifestyles.”

The scientists back their claims by saying that they extracted the pieces of the DNA from dental plaque and this was conducted for 34 skeletons of pre historic human. The specie belonged to northern Europe people.

The group of analysts state that they did this all for all the ages of men and gathered the bacteria that existed between the teeth of the human and these experiments were carried for the Bronze age to the medieval times and finally to the revolution and then later.

The results support that they depict how the nature of bacteria existed in the earlier ages and how they have evolved with the passage of time and how the human teeth have mutated to help cancel out these changes.