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Can Human Teeth Reveal Clues To Evolution And Migration?

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The story of humanity's vital and fragile relationship with the sun has been locked inside our teeth for hundreds of thousands of years. A new method is starting to tease out answers to major questions of evolution and migration, using clues hidden just under the enamel.

A group of McMaster University researchers, working with colleagues in Quebec and France, reveals the potential of the method in a paper in Current Anthropology published May 18th.

"This is exciting because we now have a proven resource that could finally bring definitive answers to fundamental questions about the early movements and conditions of human populations and new information about the importance of vitamin D for modern populations, says McMaster anthropologist Megan Brickley, lead author of the paper and Canada Research Chair in the Bioarchaeology of Human Disease.

Dentine

In 2016, the researchers first established that dentine the material that forms the bulk of the tooth carries a permanent record of vitamin D deficiency, or rickets. During periods of severe deficiency, new layers of dentine cannot mineralize, leaving microscopic markers scientists can read like rings of a tree.

Those markers can tell the story of human adaptation as early man moved from equatorial Africa into lower-light regions, and may explain changes in skin pigmentation to metabolize more sunlight, or how indoor living has silently damaged human health.

Until now, there has been no reliable way to measure vitamin D deficiency over time. As the authors show with examples from ancient and modern teeth, the method is valuable for understanding a health condition that today affects more than 1 billion.

Looking for a 100% all-natural liquid tooth oil and mouth rinse? Check out OraMD Original Strength and OraMD Extra Strength. Subscribe to our Trusted Health Club newsletter for more information about natural living tips, natural health, oral care, skincare, body care and foot care. If you are looking for more health resources check out the Trusted Health Resources list. 

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Founder Ray Spotts has a passion for all things natural and has made a life study of nature as it relates to health and well-being. Ray became a forerunner bringing products to market that are extraordinarily effective and free from potentially harmful chemicals and additives. For this reason Ray formed Trusted Health Products, a company you can trust for clean, effective, and healthy products. Ray is an organic gardener, likes fishing, hiking, and teaching and mentoring people to start new businesses. You can get his book for free, “How To Succeed In Business Based On God’s Word,” at www.rayspotts.com.

 


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