{"id":7896,"date":"2021-04-01T11:18:37","date_gmt":"2021-04-01T11:18:37","guid":{"rendered":"https:\/\/dailyrapidnews.com\/eng\/?p=7896"},"modified":"2021-04-01T15:07:56","modified_gmt":"2021-04-01T15:07:56","slug":"ancient-chewing-gum-yields-insights-into-people-and-bacteria-of-the-past","status":"publish","type":"post","link":"https:\/\/dailyrapidnews.com\/eng\/2021\/04\/01\/ancient-chewing-gum-yields-insights-into-people-and-bacteria-of-the-past\/","title":{"rendered":"Ancient \u201cChewing Gum\u201d Yields Insights into People and Bacteria of the Past"},"content":{"rendered":"<p>During excavations on Lolland, archaeologists have found a 5,700-year-old type of \u201cchewing gum\u201d made from birch pitch. In a new study, researchers from the University of Copenhagen succeeded in extracting a complete ancient human genome from the pitch.<\/p>\n<p>It is the first time that an entire ancient human genome has been extracted from anything other than human bones. The new research results have been published in the scientific journal\u00a0Nature Communications.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-7899\" src=\"https:\/\/dailyrapidnews.com\/eng\/wp-content\/uploads\/2021\/04\/Ancient-Chewing-Gum-Yields-Insights-into-People-and-Bacteria-of-the-Past-rapidnews-dailyrapidnews.jpg\" alt=\"Ancient-Chewing-Gum-Yields-Insights-into-People-and-Bacteria-of-the-Past-rapidnews-dailyrapidnews\" width=\"960\" height=\"500\" srcset=\"https:\/\/dailyrapidnews.com\/eng\/wp-content\/uploads\/2021\/04\/Ancient-Chewing-Gum-Yields-Insights-into-People-and-Bacteria-of-the-Past-rapidnews-dailyrapidnews.jpg 960w, https:\/\/dailyrapidnews.com\/eng\/wp-content\/uploads\/2021\/04\/Ancient-Chewing-Gum-Yields-Insights-into-People-and-Bacteria-of-the-Past-rapidnews-dailyrapidnews-300x156.jpg 300w, https:\/\/dailyrapidnews.com\/eng\/wp-content\/uploads\/2021\/04\/Ancient-Chewing-Gum-Yields-Insights-into-People-and-Bacteria-of-the-Past-rapidnews-dailyrapidnews-768x400.jpg 768w\" sizes=\"auto, (max-width: 960px) 100vw, 960px\" \/><\/p>\n<p>\u2018It is amazing to have gotten a complete ancient human genome from anything other than bone,\u2019\u2019 says Associate Professor Hannes Schroeder from the Globe Institute, University of Copenhagen, who led the research.<\/p>\n<p>\u2018What is more, we also retrieved DNA from oral microbes and several important human pathogens, which makes this a very valuable source of ancient DNA, especially for time periods where we have no human remains,\u2019 Hannes Schroeder adds.<\/p>\n<p>Based on the ancient human genome, the researchers could tell that the birch pitch was chewed by a female. She was genetically more closely related to hunter-gatherers from the mainland Europe than to those who lived in central Scandinavia at the time. They also found that she probably had dark skin, dark hair and blue eyes.<\/p>\n<h2 class=\"sc-bdVaJa sc-htpNat sc-bxivhb sc-11lzyao-1 dqzjMt ijbjxt-0 jExetr\">Stored in Pitch<\/h2>\n<p>The \u201cgum\u201d in question is birch pitch, a byproduct of heating up tree bark. It\u2019s unclear what our relatives chewed it for. It may have helped with toothaches or other illnesses, as it contains a natural antiseptic. Or people may have popped pitch into their mouths because that was the best way to make it stretchy enough with which to bind together stone tools. Either way, we\u2019ve been chewing pitch for tens of thousands of years. It&#8217;s not the first time researchers have retrieved genetic information from the samples, either. Earlier this year, scientists\u00a0reported retrieving DNA\u00a0from a piece of chewed pitch around 10,000 years old.<\/p>\n<p>Other archaeologists have found that because the ancient gum repels water and destroys bacteria, it preserves DNA well enough for analysis. It was a particularly lucky find at this excavation of a former fishing site on the Danish island of Lolland. The British, Danish and Norwegian researchers haven\u2019t found any human remains at the site.<\/p>\n<div>\n<div class=\"z6h68b-1 bopvGG\"><img decoding=\"async\" src=\"https:\/\/images.ctfassets.net\/cnu0m8re1exe\/AvM2blq8GLpHllxwPpe78\/6451117489926444dc6798d8d6659841\/chewing_gum_lores.jpeg?w=650\" alt=\"chewing gum lores\" \/><\/div>\n<div class=\"z6h68b-0 gSvsUO\">The chewed birch pitch found at the site in Denmark and dated to 5,700 years old. (Credit: Theis Jensen)<\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<p>Carbon dating showed the gum to be about 5,700 years old, meaning the chewer lived around when humans stopped hunting and gathering and started farming and domesticating animals. The human DNA pulled from the pitch highlighted her darker skin, darker hair and blue eyes, common among hunter-gatherers of that time and place. Comparing her genome to modern-day and other ancient DNA showed she was related to other hunter-gatherers from farther west in Europe.<\/p>\n<h2 class=\"sc-bdVaJa sc-htpNat sc-bxivhb sc-11lzyao-1 dqzjMt ijbjxt-0 jExetr\">Genetic Tales<\/h2>\n<p>Though she lived on the cusp of when humans developed agriculture, the recovered DNA showed no signs of those slightly more recent relatives. This might indicate that the hunter-gatherers stayed genetically independent of their farming relatives for a while and that agriculture took longer to catch on than researchers thought.<\/p>\n<p>Other kinds of DNA came from the gum, too. Some of the bacterial genetic material recovered might be related to diseases we still deal with today, like pneumonia, gum infections and a strain of herpes. Hazelnut and mallard duck DNA showed up as well \u2014 likely evidence of a meal, backed up by other remains found at the site.<\/p>\n<p>One woman\u2019s gum can\u2019t map how early humans migrated across Europe or pinpoint when they started planting grains. But it can offer insight into how one person lived, and lets us see how much we had in common with some of the last hunter-gatherers.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>During excavations on Lolland, archaeologists have found a 5,700-year-old type of \u201cchewing gum\u201d made from<\/p>\n","protected":false},"author":1,"featured_media":7897,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","footnotes":""},"categories":[5],"tags":[],"class_list":["post-7896","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v18.4.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>6000-year-old &#039;chewing gum&#039; provides insights into prehistoric lives<\/title>\n<meta name=\"description\" content=\"During excavations on Lolland, archaeologists have found a 5,700-year-old type of \u201cchewing gum\u201d made from birch pitch. 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The study also showed age-related changes to the DNA of long-lived species are different from those in short-lived species, especially\u2026","rel":"","context":"In &quot;Health&quot;","img":{"alt_text":"Accurate-aging-of-wild-animals-thanks-to-first-epigenetic-clock-for-bats-rapidnews","src":"https:\/\/i0.wp.com\/dailyrapidnews.com\/eng\/wp-content\/uploads\/2021\/03\/Accurate-aging-of-wild-animals-thanks-to-first-epigenetic-clock-for-bats-rapidnews-dailyrapid-e1615566069541.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":9990,"url":"https:\/\/dailyrapidnews.com\/eng\/2021\/05\/01\/ancient-stone-structures-in-saudi-arabia-older-than-previously-thought\/","url_meta":{"origin":7896,"position":3},"title":"Ancient stone structures in Saudi Arabia older than previously thought","date":"May 1, 2021","format":false,"excerpt":"A significant archaeological discovery in Northwest Saudi Arabia shows a monumental, complex of structures called mustatils that are more ancient than previously believed, a specialist research body revealed Thursday. The Kingdoms Institute, the recently unveiled center for archaeological research and conservation studies in AlUla, made the announcement. While the existence\u2026","rel":"","context":"Similar post","img":{"alt_text":"Ancient-stone-structures-in-Saudi-Arabia-older-than-previously-thought-rapidnews-dailyrapid-dailyrapidnews","src":"https:\/\/i0.wp.com\/dailyrapidnews.com\/eng\/wp-content\/uploads\/2021\/05\/Ancient-stone-structures-in-Saudi-Arabia-older-than-previously-thought-rapidnews-dailyrapid-dailyrapidnews.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":7383,"url":"https:\/\/dailyrapidnews.com\/eng\/2021\/03\/26\/we-finally-know-the-genetic-reason-why-this-bunny-walks-on-its-front-paws\/","url_meta":{"origin":7896,"position":4},"title":"We Finally Know The Genetic Reason Why This Bunny Walks on Its Front Paws","date":"March 26, 2021","format":false,"excerpt":"Selective breeding by humans has led to some incredibly odd and\u00a0unfortunate\u00a0pets over the years, and the sauteur d'Alfort rabbit is among the strangest of the lot. This rare breed of bunny does not hop or walk like any other rabbit or hare in existence. When the sauteur is ready to\u2026","rel":"","context":"In &quot;Science&quot;","img":{"alt_text":"We-Finally-Know-The-Genetic-Reason-Why-This-Bunny-Walks-on-Its-Front-Paws-rapidnews","src":"https:\/\/i0.wp.com\/dailyrapidnews.com\/eng\/wp-content\/uploads\/2021\/03\/032421_EG_rabbit-walk_feat.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":3615,"url":"https:\/\/dailyrapidnews.com\/eng\/2021\/02\/02\/perfectly-preserved-bog-beetles-nearly-as-old-as-egypts-pyramids\/","url_meta":{"origin":7896,"position":5},"title":"Perfectly-preserved &#8216;bog beetles&#8217; nearly as old as Egypt&#8217;s pyramids","date":"February 2, 2021","format":false,"excerpt":"A pristine pair of ancient beetles were discovered in the Museum collection. They date back nearly 4,000 years. The oak capricorn beetles (Cerambyx) were found in a piece of wood that had been submerged in a peat bog. It was found by a farmer in East Anglia in the 1970s\u2026","rel":"","context":"Similar post","img":{"alt_text":"tiny-big-beetles-bog-beetles-nearly-as-old-as-Egypt-pyramids-rapid-news-rapidnews","src":"https:\/\/i0.wp.com\/dailyrapidnews.com\/eng\/wp-content\/uploads\/2021\/02\/tiny-big-beetles-bog-beetles-nearly-as-old-as-Egypt-pyramids-rapid-news-rapidnews.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/dailyrapidnews.com\/eng\/wp-json\/wp\/v2\/posts\/7896","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dailyrapidnews.com\/eng\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dailyrapidnews.com\/eng\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dailyrapidnews.com\/eng\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dailyrapidnews.com\/eng\/wp-json\/wp\/v2\/comments?post=7896"}],"version-history":[{"count":3,"href":"https:\/\/dailyrapidnews.com\/eng\/wp-json\/wp\/v2\/posts\/7896\/revisions"}],"predecessor-version":[{"id":7901,"href":"https:\/\/dailyrapidnews.com\/eng\/wp-json\/wp\/v2\/posts\/7896\/revisions\/7901"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dailyrapidnews.com\/eng\/wp-json\/wp\/v2\/media\/7897"}],"wp:attachment":[{"href":"https:\/\/dailyrapidnews.com\/eng\/wp-json\/wp\/v2\/media?parent=7896"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dailyrapidnews.com\/eng\/wp-json\/wp\/v2\/categories?post=7896"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dailyrapidnews.com\/eng\/wp-json\/wp\/v2\/tags?post=7896"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}