{"id":19353,"date":"2020-06-02T11:24:53","date_gmt":"2020-06-02T11:24:53","guid":{"rendered":"http:\/\/solongevity.com\/?p=475"},"modified":"2023-08-19T18:04:07","modified_gmt":"2023-08-19T18:04:07","slug":"ageing-science-heres-what-we-know","status":"publish","type":"post","link":"https:\/\/solongevity.com\/en\/longevity-news\/ageing-science-heres-what-we-know\/","title":{"rendered":"The science of longevity: here&#8217;s what we know"},"content":{"rendered":"<div id=\"title_text-block_5eb3daf48f4aa\">\n        <h3 class=\"article-title\">The science of longevity<\/h3>\n          How and how long we live depends not only on our genes. Several studies have shown that there are epigenetic\u00a0 mechanisms that can repair DNA damage, increase longevity and reduce the risk of disease. Here is what we know today\r\n\r\nIn the last century the average lifespan has almost doubled from 46 to 75 years, and is expected to exceed 85 years in 2050.\r\n\r\nThis change is due to a number of concomitant factors: over 50 years of absence of major conflicts, economic progress that has allowed access to uncomparable levels of nutrition and hygiene, and unprecedented medical and scientific progress. Yet there is still room for improvement: it is estimated that our organism has the intrinsic capacity to live 115-120 years.\r\n\r\nThe improvement in lifespan has raised the issue of <strong>quality of life<\/strong> in a larger segment of the population, from the increased incidence of chronic and degenerative diseases to the loss of functional capacities coincident with a growing demand for maintaining professional capabilities and social fulfilment.<\/div>\n\r\n\r\n<div id=\"custom_quote-block_5eb3db158f4ab\" class=\"quote\">\n  <p class=\"quote\">Can we reach an advanced age without getting old? Recent studies suggest we can.<\/p>\n<\/div>\n\r\n\r\n<div id=\"title_text-block_5eb3db278f4ac\">\n        <h3 class=\"article-title\">Epigenetic aging<\/h3>\n          The big question today is: can we reach an advanced age without getting old? Without losing our physical and cognitive abilities, maintaining our current level of performance and, perhaps, recovering what we have lost? Studies conducted in recent years in the field of the biology of aging suggest that we can.\r\n\r\n<img fetchpriority=\"high\" fetchpriority=\"high\" decoding=\"async\" class=\"alignnone wp-image-116 size-full\" src=\"https:\/\/solongevity.com\/wp-content\/uploads\/2022\/11\/shutterstock_1046584543-1.jpg\" alt=\"\" width=\"2000\" height=\"1335\" \/>\r\n\r\nA fundamental step in aging well is linked to <strong>epigenetics<\/strong> (which literally means &#8220;above genetics&#8221;). What is written in our genetic code does not inevitably dictates how we live: genes, the functional units of our DNA, can be more or less expressed. Epigenetics is the set of all those processes that, without modifying the DNA sequence, regulate gene expression.\r\n\r\nThe implementation of this genetic potential therefore depends on epigenetics, which in some cases confers advantages but in others increases the risks. Just think of the conditions for which familiarity exists, such as hypertension or type 2 diabetes: there is a genetic predisposition, but in many cases it is our lifestyle that determines whether we will become hypertensive or diabetic.<\/div>\n\r\n\r\n<div id=\"custom_quote-block_5eb3db658f4ad\" class=\"quote\">\n  <p class=\"quote\">Epigenetics is easily influenceable and research has already discovered how to do it.<\/p>\n<\/div>\n\r\n\r\n<div id=\"title_text-block_5eb3df908f4af\">\n          <strong>How does the relationship between epigenetics and DNA work?<\/strong>\r\n\r\nEach cell is like a small factory that works continuously to produce everything our body needs, and to govern the biochemical reactions and processes that take place in it. All of this thanks to the <strong>proteins<\/strong>, which are the structural &#8220;bricks&#8221; of the cells and regulate the functioning of the entire organism. Proteins are made up of a long chain of amino acids, the sequence of which is dictated by the genes (the DNA units we inherit from our parents) that determine their form and function.\r\n\r\n<strong>How does the relationship between epigenetics and DNA work?<\/strong>\r\n\r\nDNA, however, is not immune to stimuli and attacks from the environment: pollution, ionizing radiation, viruses, bacteria, can cause alterations that lead to defective biochemical reactions: micro-damages that accumulate over the years, giving rise to degenerative processes typical of aging.\r\n\r\n<em>Epigenetic aging is now considered to be the common mechanism of all the imbalances that lead to the gradual loss of our longevity reserve<\/em>\r\n\r\n<img decoding=\"async\" class=\"size-full wp-image-117\" src=\"https:\/\/solongevity.com\/wp-content\/uploads\/2022\/11\/shutterstock_407100445-1.jpg\" alt=\"\" width=\"2500\" height=\"1250\" \/> Our organism possesses remarkable capacities of DNA self-repair and adaptation, thanks mainly to the epigenetic mechanisms. It is when these mechanisms stop working that we speak of epigenetic aging, which is considered the basis of the gradual loss of the physiological reserve (which we call &#8220;<em>longevity reserve<\/em>&#8220;) with which we are born and which represents our potential to live in good health for a long time.\r\n\r\n<strong>Many aging mechanisms<\/strong>\r\n\r\nSo far 9 key mechanisms (<a href=\"https:\/\/solongevity.com\/en\/news-en\/why-dowe-age-identify-9-biological-causes\/\">hallmarks<\/a>) of aging have been identified and epigenetics plays a major role. Epigenetic aging is closely related to all the other hallmarks of aging, such as metabolic, immune and cognitive aging, depending on the system we consider. It is also beleived that improvement of only one of these 9 hallamrks, can impinge in all the others leading to a rebalance of the whole system.\r\n\r\n<strong>DNA vs Epigenetics: What matters the most?<\/strong>\r\n\r\nGene variants (or polymorphisms, i.e. genes that differ by a single letter in the DNA sequence within a population) have been identified that can accelerate or slow down aging.\r\n\r\n<em>Carrying a gene variant that accelerates aging is not necessarily bad news.<\/em>\r\n\r\nThe understanding of epigenetic mechanisms has made it clear, however, that being a carrier of an unfavorable variant is not necessarily bad news, because epigenetics can &#8220;limit the damage&#8221;. And even when the variant is favourable, epigenetics continues to be important.\r\n\r\n<img decoding=\"async\" class=\"wp-image-118 size-full\" src=\"https:\/\/solongevity.com\/wp-content\/uploads\/2022\/11\/shutterstock_797669914.jpg\" alt=\"\" width=\"1000\" height=\"668\" \/> Blue Zones are well defined geographical areas with high percentages of centenarians. The key pillar is certainly the genetic continuity of the population, but the role of specific habits, which concern diet and physical activity, and the environment appears to be predominant.\r\n\r\n&nbsp;<\/div>\n\r\n\r\n<div id=\"custom_quote-block_5eb3e0428f4b0\" class=\"quote\">\n  <p class=\"quote\">Some genes have been identified, called longevity genes, whose activity is measurable and modifiable.<\/p>\n<\/div>\n\r\n\r\n<div id=\"title_text-block_5eb3e0ca8f4b1\">\n        <h3 class=\"article-title\">The longevity genes<\/h3>\n          <strong>The longevity genes<\/strong>\r\n\r\nLet&#8217;s take the case of Blue Zones, well defined geographical areas with high percentages of centerians. Their key pillar is certainly the genetic continuity of the population, but the role of specific habits, which concern diet and physical activity, and the environment appears to be predominant.\r\n\r\nThis is because, as is now clear, our genome has the ability to &#8220;dialogue&#8221; and &#8220;adapt&#8221; to the environmental context in which it operates. If this dialogue is properly governed, the 9 hallmarks of ageing will be triggered much more gradually or will not occur at all, leading to good health and good quality of life. And giving the possibility to live the maximum of the individual own longevity reserve.\r\n\r\n<strong><em>Sirtuins activate under stressful conditions &#8211; such as nutrient shortages and cold temperatures &#8211; or in the presence of threats, to reduce cellular reproduction activity and concentrate all resources on survival.\r\n\u200d<\/em><\/strong>\r\nAll organisms have sirtuin genes. Among their most important functions is to self-activate in conditions of metabolic stress &#8211; such as nutrient shortages and cold temperatures &#8211; or in the presence of threats, to reduce cellular reproduction activity and concentrate all resources on survival.\r\n\r\n<img loading=\"lazy\" loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-119\" src=\"https:\/\/solongevity.com\/wp-content\/uploads\/2022\/11\/shutterstock_385000288.jpg\" alt=\"\" width=\"1000\" height=\"654\" \/>\r\n\r\n<strong><em>It has been known since the 1930&#8217;s that a moderate calorie restriction prolongs life, and it has been later demonstrated that this is due to the action of sirtuins.\r\n\u200d<\/em><\/strong>\r\n\r\nToday we know that lifestyle can influence the expression (i.e. &#8220;production&#8221;) and activity of sirtuins, such as moderate fasting and calorie restriction. It has been known since the 1930&#8217;s that moderate calorie restriction prolongs life. In the early 2.000. it was found that calory restriction acts via the induction of sirtuin activation.\r\n\r\nAnother moderate stress capable of modulating the expression of these proteins is <strong>non-competitive physical activity<\/strong>. Not only that. Both what we eat and the time of the day we eat (e.g. avoid certain foods before sleep) affect their activity. We have also identified some active ingredients (molecules naturally present in the plant world) that can stimulate sirtuins and increase their effectiveness.\r\n\r\n<strong>Monitoring epigenetic aging, chrono-nutrition programs, nutritional supplementation<\/strong> with active ingredients of natural origin, <strong>moderate physical activity programs<\/strong> and <strong>neurocognitive training<\/strong> are the cornerstones of an effective strategy to stimulate sirtuin activity and preserve our \u201clongevity reserve&#8221;. And they are the fundamental axes of SoLongevity&#8217;s research.\r\n\r\n<strong>SoLongevity Reseach<\/strong>\r\n\r\nSoLongevity&#8217;s research leverages on the intervention on 5 of the 9 hallmarks of aging, through a medical program based on the principle of &#8220;<em>measuring and acting<\/em>&#8220;, and the use of cutting edge instruments of Precision Medicine.\r\n<ol>\r\n \t<li>Precise measurement of epigenetic aging and biological age<\/li>\r\n \t<li>Measurement of physiological parameters, focused on three dimensions:\r\n<ul>\r\n \t<li>The immuno-metabolic dimension, i.e. the evaluation of metabolic and inflammatory parameters.<\/li>\r\n \t<li>The neurocognitive dimension, i.e. the evaluation of cognitive abilities to develop a path for their enhancement and\/or recovery.<\/li>\r\n \t<li>The cardio-respiratory and muscle-skeletal dimensions, i.e. the evaluation of the physical state to establish the optimal level of motor activity.<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li>Targeted and personalized intervention on the sirtuin system through three strategies: nutrition, dietary supplementation based on active ingredients of natural origin and physical activity.<\/li>\r\n<\/ol>\r\nIf acting on only one of the 9 causes of aging can bring the whole system back into balance, improving 5 of them can be even more effective in slowing down the aging process. Our measurement systems enable us to monitor the impact of our programs over time<\/div>\n","protected":false},"excerpt":{"rendered":"<p>115 years is the estimated intrinsic capacity of the human being to live. But how long we live, and how we live, does not depend solely on our genes. Epigenetic studies have shown that there are mechanisms that can repair DNA damage and increase longevity.<\/p>\n","protected":false},"author":1,"featured_media":117,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[158,60,71],"tags":[160,159],"class_list":["post-19353","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news-en","category-old-posts","category-scientific-study","tag-active-ageing","tag-longevity-science-en"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>The science of longevity: here&#039;s what we know - SoLongevity<\/title>\n<meta name=\"description\" content=\"Active aging: The science of longevity studies how to live a long and healthy life. 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