Navigation Links
Human Teeth Healthier in the Stone Age Than Today: Study

TUESDAY, Feb. 19 (HealthDay News) -- Something to think about next time you're in the dentist's chair: Ancient humans had healthier teeth than people do today, researchers say.

This decline in oral health over the past 7,500 years is the result of changes in oral bacteria due to human evolution and industrialization, the study authors said. These changes have led to chronic oral and other health problems, according to the report published Feb. 18 in Nature Genetics.

"The composition of oral bacteria changed markedly with the introduction of farming, and again around 150 years ago," explained study leader Alan Cooper, a professor and director of the University of Adelaide's Australian Centre for Ancient DNA, in a center news release. "With the introduction of processed sugar and flour in the Industrial Revolution, we can see a dramatically decreased diversity in our oral bacteria, allowing domination by caries [cavities]-causing strains. The modern mouth basically exists in a permanent disease state."

The international team of researchers examined DNA that had been preserved in tartar -- calcified dental plaque -- found on 34 prehistoric northern European human skeletons. They used these samples to analyze how oral bacteria changed from the Stone Age to the last hunter-gatherers, medieval times and later with the introduction of food manufacturing in the Industrial Revolution.

The evolution of human behavior and diet have had a negative impact on oral health, the investigators said.

"This is the first record of how our evolution over the last 7,500 years has impacted the bacteria we carry with us, and the important health consequences," Cooper said. "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," he pointed out.

Study lead author Christina Adler, now at the University of Sydney, added that "dental plaque represents the only easily accessible source of preserved human bacteria." And, she said in the news release, "Genetic analysis of plaque can create a powerful new record of dietary impacts, health changes and oral pathogen genomic evolution, deep into the past."

The researchers said their research is being expanded to include other periods in time, other areas of the world and other species, such as Neanderthals.

More information

Visit the U.S. Centers for Disease Control and Prevention to learn more about oral health.

-- Mary Elizabeth Dallas

SOURCE: Australian Centre for Ancient DNA, news release, Feb. 18, 2013

Copyright©2012 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Emerging SARS-Like Virus Well-Suited to Attack Humans: Study
2. The same genetic defect causes Pompe disease in both humans and dogs
3. Are Humans Extraterrestrials From Other Star Systems in the Milky Way Galaxy? Lou Baldin Author of 13 Books on the Subject Thinks So
4. xR: The Human Genome Project has Delivered on its Promise to Treat Disease. Introducing GEMS, the Genetic Enzyme Methylation Syndrome
5. Neurological Wellness Center Criticizes the U.S. Patent Office for Issuing a Patent for an Injection Site on the Human Body
6. When Trees Die Off, Human Health May Also Suffer
7. Synthetic circuit allows dialing gene expression up or down in human cells
8. Chinas Overuse of Antibiotics in Livestock May Threaten Human Health
9. Putting our heads together: Canines may hold clues to human skull development
10. Colon cancer exhibits a corresponding epigenetic pattern in mice and humans
11. Meeting: Scientists to explore 60 topical issues related to human health and the environment
Post Your Comments:
Related Image:
Human Teeth Healthier in the Stone Age Than Today: Study
(Date:11/25/2015)... (PRWEB) , ... November 25, 2015 , ... Dr. John ... to learn more about hair loss treatment with the Capillus272™ Pro laser therapy cap. ... solution for thicker and fuller hair, without the need for surgery, prescription pills, or ...
(Date:11/25/2015)... TX (PRWEB) , ... November 25, 2015 , ... For ... the companies’ “ Two Organizations, One Beat ” campaign. The partnership between the two ... services to aid in MAP International’s cause. , MAP International was founded in 1954 ...
(Date:11/25/2015)... ... 25, 2015 , ... Dental professionals who would like to become more proficient ... attend Dr. Mark Iacobelli’s Advanced Implant Mentoring (AIM) CE course. Courses will be held ... the co-founders of Advanced Implant Mentoring (AIM), Dr. Iacobelli and Dr. D’Orazio are proud ...
(Date:11/25/2015)... , ... November 25, 2015 , ... The McHenry County ... recent successful appellate decision obtained by Attorneys Francisco J. Botto and Alex C. Wimmer. ... Illinois Workers’ Compensation Comm’n, 2015 IL App (2d) 130884WC. , According to court documents, ...
(Date:11/25/2015)... ... November 25, 2015 , ... SCOTTSDALE, ... facial plastic surgeon specializing in both surgical and non-surgical treatments, announced the expansion ... at Hobgood Facial Plastic Surgery. , Highly trained and nationally recognized for ...
Breaking Medicine News(10 mins):
(Date:11/26/2015)... 2015 Research and Markets ( ) ... Care Market by Type (Dressings, Therapy Devices, Active Wound ... Out-Patient Facility), and Geography - Global Forecast to 2020" ... --> --> The purpose of this ... of the global advanced wound care market. It involves ...
(Date:11/26/2015)... , November 26, 2015 ... of the "Radioimmunoassay Market by Type ... Pharmaceutical Industry, Academics, Clinical Diagnostic Labs), Application ... Forecast to 2020" report to their ... announced the addition of the "Radioimmunoassay ...
(Date:11/25/2015)... 2015  The American Academy of Pediatrics (AAP), ... the March of Dimes cheered today,s signature into ... Act of 2015 (S.799), which takes much-needed ... exposed to drugs, such as opioids, and to ... three organizations have worked together leading advocacy efforts ...
Breaking Medicine Technology: