Farming Sped Eurasian Evolution

New clues from ancient DNA reveal the remarkable effect of agriculture on adaptation in Stone Age humans who lived across Europe.

Written byBob Grant
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WIKIMEDIA, BERNARD BILL5Stone Age human populations that adopted farming rapidly evolved traits that helped them survive a more sedentary lifestyle, according to researchers studying the ancient DNA of 230 people who lived in Western Eurasia millennia ago. The results of the massive genomic effort were published this week (November 23) in Nature. Among other insights, the international team of researchers suggested that ancient Eurasians who adopted agriculture around 8,000 years ago rapidly evolved genes that helped them metabolize fats, digest milk, and fight off infections associated with higher population densities.

“It’s a change in the food people are eating. It’s a change in social organization. People are living in much bigger communities. People are living in much closer proximity to animals,” Harvard geneticist and study coauthor Iain Mathieson told The Washington Post.

The results of the genomic analysis also support the notion that agriculture came to Europe via migration of southern people who had already started farming, rather than through a process of cultural diffusion, where agricultural technologies spread to new populations as people transmitted ideas between groups. “We now have the first clear evidence that agriculture in Europe started with the first farmers coming from what is now Turkey,” study coauthor Ron Pinhasi, an archaeologist at University College Dublin, told BBC News. “Some have ...

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  • From 2017 to 2022, Bob Grant was Editor in Chief of The Scientist, where he started in 2007 as a Staff Writer. Before joining the team, he worked as a reporter at Audubon and earned a master’s degree in science journalism from New York University. In his previous life, he pursued a career in science, getting a bachelor’s degree in wildlife biology from Montana State University and a master’s degree in marine biology from the College of Charleston in South Carolina. Bob edited Reading Frames and other sections of the magazine.

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