A combined study of genetics and bone fossils showing the transition from early detection, harvesting and consumption to agriculture over 12,000 years ago in Europe was found. adverse health outcomes as reported by shorter -than -expected peaks in early farmers, according to the global group. of the applicants.
“Recent studies have tried to show that the contribution of DNA is high,” said Stephanie Marciniak, assistant research physician, Penn State. “We started thinking about the long -standing questions about moving from catching, harvesting and eating to sedentary farming and decided to look at the health impact with a higher level. as an option. “
Working with George H. Perry, associate professor of anthropology and biology, Penn State, and more than 40 world researchers, Marciniak looked at the heights of people who lived before the Neolithic, and the Neolithic, Copper, Bronze and Iron Age. The researchers measured the long bones of the bone remains that had been modeled or tested for ancient DNA by other researchers.
The researchers created a model that used adult height, signs of severity seen in bones and old DNA. They also looked at the genetic markers of the ancestors. The researchers reported their results in a new issue of Proceedings of the National Academy of Sciences.
“Our approach is different from using high -level measurements and old DNA taken from the same people,” Marciniak said.
The shift from hunting, harvesting and eating to farming did not take place throughout Europe at the same time, but in different places at different times.
The researchers studied 167 people who lived between 38,000 and 2,400 years ago. These are the first farmers, the first farmers and the last farmers. They found that people from the Neolithic, considering their physical height, were on average 1.5 inches shorter than those before and 0.87 inches shorter than those behind. They also found that the height continued to rise through copper – 0.77 inches, Bronze – 1.06 inches, and iron – 1.29 inches relative to Neolithic heights.
“Right now, what we see is 80% of the height comes from genetic makeup and 20% from the environment,” Marciniak said. “Researchers don’t know all the genetic factors associated with height.”
The shift from hunting, harvesting and foraging to agriculture did not always result in high losses, although it did occur in some parts of Europe, such as Marciniak.
Marciniak and his team also looked at culture in their teaching.
“People are moving, usually from east to west,” he said. “We want to account for that move that brought in different parts of the highly related genetics.”
As the group incorporated ancestral knowledge, they found that for the Neolithic, altitude decreased slightly rather than equal to altitude.
“This research needs to be further researched with more data,” Marciniak said. “Our work presents a picture of something very powerful and nuanced. We need to do more to understand why the decline in genetic predisposition is associated with higher genetic predisposition. moving to the farm. “
The researchers said they believed their approach was in line with past human health research and could be used in other ways.
A contribution of genetic studies to changes in prehistoric human status
Stephanie Marciniak et al, An integrative skeletal and paleogenomic analysis of stature variation showing declining health for early European farmers. Proceedings of the National Academy of Sciences (2022). DOI: 10.1073 / pnas.2106743119
Presented by Pennsylvania State University
Directions: European farmers’ levels not in line with expectations (2022, April 7) downloaded on 7 April 2022 from https://phys.org/news/2022-04-european-farmers- heights.html
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