About 50,000 years ago, a bunch of Neanderthals built a house – and a bathroom–There is now a rocky getaway in the south of Valencia, Spain. Over the years, some of those paleo-powers, the oldest known to have come from the human species, have been excavated and analyzed. Now, researchers have caught a glimpse of ecosystems populated by those early hominins, which occur from a strange deposit in the remains of a fire pit at the site.
More than 200 bacterial microorganisms were extracted from ancient armor by an interdisciplinary team of archaeologists, microbiologists and anthropologists. Researchers found a remarkable amount of continuity between microbial inhabitants of the Neanderthal intestine and germs measuring the courage of modern humans. This coherence shows many subtractions of our insides that are actually long-lived residents, have been in our midst for hundreds of thousands of years, and cohabiting with the housewives they inhabit. Research was Posted on In The Nature Journal Communications Biology.
According to Marco Candela, a microbiologist at the University of Bologna and co-author of the paper, the team wanted “which microbiomes are coping with Homo Dynasty in evolutionary times. “To do this, he looked for germs that contemporary humans could share with Neanderthals.
It is useful in the context of the early reconstruction of a human intestine that our microbiomes look like today; Researchers want to know which bacteria persist with us and which have completely disappeared from our internal ecosystems. Microorganisms with enough vigor in mammals’ courage were called “old friends” Mid 2000s, And their co-development with us is linked to the ways humans have lived for hundreds of thousands of years.
The oldest gut microbiome data for humans is about 8,000 years old – not even before the last ice age, which ended about 11,000 years ago. When researchers talk about understanding the understanding of our early ancestors, they have abandoned it. Neanderthal armor pushed the chronology back some 40,000 years — shortly before the Neanderthals as we know they disappeared from the evolutionary record.
“The point is that we identified some microorganisms that are shared between modern humans and Neanderthals,” Candela said. “This means that these microorganisms populate the stomachs of human offspring before Neanderthal’s isolation and Sapien Genealogy
An important discovery in the Neanderthal Pup was the incorporation of short-chain fatty acid-producing bacteria, many of which allow humans to excrete excess energy from dietary fiber, and one of which suggests researchers have given health benefits to ancient mothers and children May be provided. their kids. But just as our microbes grow good germs through time, so did the hell-guards – researchers also found pathogens of bacteria in the feces that persist around today, causing oral and anti-aging in modern humans Dental diseases occur.
According to Candela, like Hazda, a group of hunters in northern Tanzania, microbiomes of a traditional, rural way of living have more courage. On the other hand are people who live in urban environments, who take our courage apart and make our bacterial inhabitants similar from one person to another. The paper describes a wholesale loss in the diversity of bacteria in the modern human gut and a situation in which each of our guts are not talking to each other like they did in our evolutionary past. “Each of us is like an island,” Candela said.
Often, the human evolutionary path is heroically drawn out of many early humans, ours was one to succeed. But as the Neanderthal microbiome shows, we were hardly alone for that trip. Many microbes had only one way.
“Based on these results, we can estimate the symbiotic time-depth between humans and some co-resident microbes, which may be at least one million years,” wrote co-author Stephanie Schneur in Nature The blog On research. “This implies a definite physiological relationship as an ancient heritage associated with normal development and health at longevity in both humans and Neanderthals.”
Hopefully, more feces will be studied in the future, so we can unleash the courage that created us. For now, we can be grateful that the findings are not nonsense.