{"id":121685,"date":"2019-06-07T04:40:26","date_gmt":"2019-06-07T04:40:26","guid":{"rendered":"https:\/\/www.bnreport.com\/almost-all-healthy-people-harbor-patches-of-mutated-cells\/"},"modified":"2019-06-07T04:40:26","modified_gmt":"2019-06-07T04:40:26","slug":"almost-all-healthy-people-harbor-patches-of-mutated-cells","status":"publish","type":"post","link":"https:\/\/www.bnreport.com\/en\/almost-all-healthy-people-harbor-patches-of-mutated-cells\/","title":{"rendered":"Almost all healthy people harbor patches of mutated cells"},"content":{"rendered":"<p>Normal isnt always normal. A new study finds that large groups of cells in healthy tissues carry mutations, including ones tied to cancer.<\/p>\n<p>About 95 percent of healthy people <a href=\"https:\/\/science.sciencemag.org\/cgi\/doi\/10.1126\/science.aaw0726\" rel=\"noreferrer noopener\" target=\"_blank\">had patches of mutated cells in at least one of the 29 tissues examined<\/a>, including kidney, muscle and liver, researchers report in the June 7 <em>Science<\/em>. Most of those mutations found in the 488 people in the study are harmless, but some have been linked to various cancers.<\/p>\n<p>About 40 percent of tissues had at least one big patch of mutated cells, and about 5 percent of the studied samples had five or more mutant patches, Keren Yizhak of the Broad Institute of MIT and Harvard and colleagues discovered.<\/p>\n<p>Skin, esophagus and lung tissues had more of these mutant patches than other tissues, the researchers found. Those three tissue types are exposed to more ultraviolet light, pollution, smoke or other environmental factors that may cause mutations than internal organs, which are not directly exposed to these external factors. In people of European ancestry, sun-exposed skin accumulated more mutations than covered skin did. African Americans didnt have the same increase in mutations in their sun-exposed skin.<\/p>\n<p>Age also affected the number of mutations, with mutations popping up more often after age 45 in tissues that divide to make new cells. Tissues that dont actively grow didnt<a href=\"https:\/\/www.sciencenews.org\/article\/healthy-people-mutations-cancer-tissue-cells\" rel=\"noreferrer noopener\" target=\"_blank\"><strong>Read More \u2013 Source<\/strong><\/a><br \/>\n[contf]<br \/>\n[contfnew]<br \/>\n        <img decoding=\"async\" src=\"https:\/\/www.sciencenews.org\/profiles\/sn\/themes\/science_news\/logo.png\" \/><\/p>\n<h5><a href=\"https:\/\/app.newswirenow.co.uk\/www.sciencenews.org\" rel=\"noreferrer noopener\" target=\"_blank\">science news<\/a><\/h5>\n<p>[contfnewc]<br \/>\n[contfnewc]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Normal isnt always normal. A new study finds that large groups of cells in healthy tissues carry mut..<\/p>\n","protected":false},"author":1,"featured_media":121686,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49],"tags":[],"class_list":["post-121685","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Almost all healthy people harbor patches of mutated cells - Business News Report<\/title>\n<meta name=\"description\" content=\"Normal isnt always normal. 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