Navigation Links
Human Teeth Healthier in the Stone Age Than Today: Study
Date:2/19/2013

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 Unive
'/>"/>

Copyright©2012 ScoutNews,LLC.
All rights reserved  

Page: 1 2

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:
*Name:
*Comment:
*Email:
Related Image:
Human Teeth Healthier in the Stone Age Than Today: Study
(Date:9/1/2014)... is a leading review website in the world. It ... announced that GreenGeeks, Arvixe and Hostgator are the best ... http://www.greengeeks.com/cgi-bin/affiliates/clickthru.cgi?id=seohosts ) is one of the best web hosting ... of useful products for sale. On its website, customers ... , As one of the Top 10 Web Hosting ...
(Date:9/1/2014)... Television shows filled with action and sound may be ... cookies, carrots and grapes while watching an excerpt from ... program. , , Television has been blamed for helping ... lifestyle. But the focus of why has been on ... other distracting activities that can cause people to eat ...
(Date:9/1/2014)... News) -- You may be able to convince your brain ... suggests. The study included eight overweight and obese people ... to change how people react to different foods. These participants ... obese people who weren,t in the program. Both groups ... and again six months later. The scans revealed that the ...
(Date:9/1/2014)... (PRWEB) September 01, 2014 An operating ... a hospital for performing surgical operations. An operating room ... tables, surgical booms, operating room lights, imaging displays as ... a report by Transparency Market Research, a U.S.-based market ... to reach USD 4.5 billion by 2019. , ...
(Date:9/1/2014)... Dennis Thompson HealthDay ... An experimental Ebola drug previously given to two American aid ... deadly virus in laboratory tests, researchers report. The drug, ... even if they didn,t get the medication until five days ... of Ebola who were days or even hours away from ...
Breaking Medicine News(10 mins):Health News:The Best Reseller Hosting Suppliers in August Released by Leading Review SiteTop10BestSEOHosting.com 2Health News:Research letter: Viewers ate more while watching Hollywood action flick on TV 2Health News:Train Your Brain to Choose Fruit Salad Over French Fries 2Health News:Operating Room Equipment Market Study 2019 by Transparency Market Research 2Health News:Operating Room Equipment Market Study 2019 by Transparency Market Research 3Health News:Monkey Trial Supports Ebola Drug That May Have Helped 2 Stricken Americans 2Health News:Monkey Trial Supports Ebola Drug That May Have Helped 2 Stricken Americans 3
... to develop the colorectal polyps that can precede colon cancer. ... patients attending for colonoscopy. They found the incidence of polyps// ... cancer - to be greater among current smokers than in ... likely to have more than two polyps, growths greater than ...
... of the antioxidant vitamin E may assist in reducing ... Health Study and the Health Professionals Follow-Up Study', presented by ... Parkinson's disease. The participants have been followed up for several ... ,Those with a high intake of vitamin E ...
... UK inserting a coil into a weakened blood vessel offers ... rate from subarachnoid haemorrhage// - caused by a bursting of ... to 40 per cent in the first 24 hours after ... a clip to prevent further rupture of the blood vessel. ...
... medical centers hope to arbitrate whether a laser can stop ... two forms of macular degeneration, wet and dry. //The dry ... by the formation of yellowish deposits within the layers of ... have a gradual loss of vision. While there are a ...
... researchers of University of Kansas it is observed that poorly ... pain, gas and diarrhea.// Often people suffer from bowel symptoms ... can be found. They have found out that a high ... to digest fructose. ,Found in honey, fruits and ...
... that endometriosis is linked to infertility. There has long ... shows one of the reasons why the disease may ... patients, but concluded that endometriosis causes a certain action ... fluid located near the fallopian tubes. They then studied ...
Cached Medicine News:
(Date:8/29/2014)... YORK , Aug. 29, 2014 Pomerantz ... TMS S.A. ("EDAP" or the "Company") (NASDAQ: EDAP ... filed in United States District Court, Southern District of ... 14-cv-6069, is on behalf of a class consisting of ... February 1, 2013 and July 30, 2014, inclusive (the ...
(Date:8/29/2014)... PARK, Calif. , Aug. 29, 2014 ... Medical as CEO and member of the Board of ... decades of medical device development and commercialization experience, including ... field. Mr. Engelson previously served as a Partner of ... as President and CEO of two Foundry start-ups. Mr. ...
(Date:8/29/2014)... , Aug. 29, 2014 Research ... "China Orthopedic Instrument Industry Report, 2014-2017" report ... aging population and rising proportion of reimbursement for medical ... effectively released, with its scale presenting a CAGR of ... products are three product segments of orthopedic instruments in ...
Breaking Medicine Technology:SHAREHOLDER ALERT: Pomerantz Law Firm Announces the Filing of a Class Action against EDAP TMS S.A. and Certain Officers - EDAP 2SHAREHOLDER ALERT: Pomerantz Law Firm Announces the Filing of a Class Action against EDAP TMS S.A. and Certain Officers - EDAP 3Medina Medical Announces Erik T. Engelson Joins as Chief Executive Officer 2China Orthopedic Instrument Industry Report, 2014-2017 2
... (NASDAQ: IPHS ), the leading North American ... pharmaceutical, oral care and industrial end markets, today announced ... completed the acquisition of Kelatron Corporation. Kelatron ... of bioactive mineral nutrients. For over 30 years, the ...
... Filtrona Porous Technologies, a developer and manufacturer of custom ... will introduce a new range of hydrophilic, polyurethane foams ... COMPAMED trade fair in Dusseldorf, Germany from 16 to ... New innovations to be featured at ...
Cached Medicine Technology:Innophos Holdings, Inc. Announces Acquisition of Kelatron Corporation 2Filtrona Porous Technologies to Introduce New Hydrophilic Foam Products for Advanced Wound Care at the MEDICA / COMPAMED Trade Fair 2
... Eppendorf Reference Series 2000 Pipette is a ... a compact and robust design, and superior ... used to operate the measuring stroke and ... Product features:Eppendorf "pipette/tip" system ensures utmost accuracy ...
... Finnpipette Focus from Thermo Labsystems ... ergonomics with uncompromising performance. ... offers a custom fit for ... shorter tip cones allow easier ...
... Focus from Thermo Labsystems was ... with uncompromising performance. The ... a custom fit for different ... tip cones allow easier and ...
... Finnpipette Focus from Thermo Labsystems ... ergonomics with uncompromising performance. ... offers a custom fit for ... shorter tip cones allow easier ...
Medicine Products: