{"id":25911,"date":"2012-03-28T08:37:06","date_gmt":"2012-03-28T12:37:06","guid":{"rendered":"http:\/\/asweetlife.org\/?p=25911"},"modified":"2015-12-30T04:43:32","modified_gmt":"2015-12-30T09:43:32","slug":"atherosclerosis-not-caused-by-excess-insulin-new-study-shows","status":"publish","type":"post","link":"https:\/\/asweetlife.org\/?p=25911","title":{"rendered":"Atherosclerosis Not Caused by Excess Insulin, New Study Shows"},"content":{"rendered":"
\"\"<\/a>Studies have shown that excess insulin circulating in the bloodstream is a major independent risk factor for cardiovascular disease. However, a new study from Joslin Diabetes Center finds that this condition, called hyperinsulinemia, \u00a0itself does not cause hardening of the arteries, also known as\u00a0atherosclerosis.<\/div>\n
\u00a0<\/div>\n
Scientists have known for some time that insulin resistance and hyperinsulinemia cause increased lipids in the circulation, which indirectly leads to atherosclerosis.\u00a0 However, the Joslin study, published in the May issue of the journal Arteriosclerosis, Thrombosis, and Vascular Biology, shows that, without other factors such as high blood pressure and high cholesterol, hyperinsulinemia alone does not cause atherosclerosis.<\/div>\n
\n

In humans, insulin resistance, a condition in which insulin becomes less effective at lowering blood sugar levels, coexists with hyperinsulinemia. Both are associated with atherosclerosis, the buildup of cholesterol in blood vessels that causes coronary artery disease, heart attack, and stroke. In this condition, vascular cells could become dysfunctional because of hyperinsulinemia or because vascular cells themselves are insulin resistant,\u00a0 which is caused by increased insulin production from pancreatic beta cells as a compensatory mechanism to overcome insulin resistance.<\/p>\n

To study the effects of hyperinsulinemia on atherosclerosis,\u00a0Christian Rask-Madsen, MD, PhD,\u00a0and his colleagues created mice with fewer insulin receptors in every tissue of the body and compared them to mice with intact insulin receptors. Insulin receptors make cells responsive to insulin, a hormone that circulates in the bloodstream. Both sets of mice were genetically modified to have high cholesterol, but were similar in terms of body weight, glucose metabolism, and lipid and blood pressure levels.<\/p>\n<\/div>\n

\n

Reducing the insulin receptors from one set of mice did not significantly impair their glucose metabolism, says Rask-Madsen\u2014certainly not enough to make the animals overtly insulin resistant\u2014but it did increase the amount of circulating insulin by reducing its removal from the blood. This model allowed the researchers to study the effects of hyperinsulinemia without the confounding effects of insulin resistance.<\/p>\n

In humans, insulin resistance, a condition in which insulin becomes less effective at lowering blood sugar levels, coexists with hyperinsulinemia. Both are associated with atherosclerosis, the buildup of cholesterol in blood vessels that causes coronary artery disease, heart attack, and stroke. In this condition, vascular cells could become dysfunctional because of hyperinsulinemia or because vascular cells themselves are insulin resistant,\u00a0 which is caused by increased insulin production from pancreatic beta cells as a compensatory mechanism to overcome insulin resistance.<\/p>\n

The new findings build on a 2010 study conducted by Rask-Madsen, which found that insulin resistance only in endothelial cells is sufficient to increase susceptibility to atherosclerosis. George King, MD, Joslin\u2019s chief scientific officer, is the senior author of both studies.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Studies have shown that excess insulin circulating in the bloodstream is a major independent risk factor for cardiovascular disease. However, a new study from Joslin Diabetes Center finds that this condition, called hyperinsulinemia, itself does not cause hardening of the arteries, also known as atherosclerosis…<\/p>\n","protected":false},"author":131,"featured_media":25916,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","footnotes":""},"categories":[1542,1441],"tags":[],"yoast_head":"\nAtherosclerosis Not Caused by Excess Insulin<\/title>\n<meta name=\"description\" content=\"A new Joslin Diabetes Center study found that hyperinsulinemia itself does not cause hardening of the arteries, known as atherosclerosis.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/asweetlife.org\/?p=25911\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"ASweetLife Team\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/asweetlife.org\/?p=25911\",\"url\":\"https:\/\/asweetlife.org\/?p=25911\",\"name\":\"Atherosclerosis Not Caused by Excess Insulin\",\"isPartOf\":{\"@id\":\"https:\/\/asweetlife.org\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/asweetlife.org\/?p=25911#primaryimage\"},\"image\":{\"@id\":\"https:\/\/asweetlife.org\/?p=25911#primaryimage\"},\"thumbnailUrl\":\"https:\/\/asweetlife.org\/wp-content\/uploads\/2012\/03\/joslin-diabetes-center_logo1-1.png\",\"datePublished\":\"2012-03-28T12:37:06+00:00\",\"dateModified\":\"2015-12-30T09:43:32+00:00\",\"author\":{\"@id\":\"https:\/\/asweetlife.org\/#\/schema\/person\/5de2b093878b82b0ea97917f8fd72585\"},\"description\":\"A new Joslin Diabetes Center study found that hyperinsulinemia itself does not cause hardening of the arteries, known as atherosclerosis.\",\"breadcrumb\":{\"@id\":\"https:\/\/asweetlife.org\/?p=25911#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/asweetlife.org\/?p=25911\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/asweetlife.org\/?p=25911#primaryimage\",\"url\":\"https:\/\/asweetlife.org\/wp-content\/uploads\/2012\/03\/joslin-diabetes-center_logo1-1.png\",\"contentUrl\":\"https:\/\/asweetlife.org\/wp-content\/uploads\/2012\/03\/joslin-diabetes-center_logo1-1.png\",\"width\":128,\"height\":53,\"caption\":\"joslin diabetes center_logo\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/asweetlife.org\/?p=25911#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/asweetlife.org\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Atherosclerosis Not Caused by Excess Insulin, New Study Shows\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/asweetlife.org\/#website\",\"url\":\"https:\/\/asweetlife.org\/\",\"name\":\"ASweetLife\",\"description\":\"The Diabetes Magazine\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/asweetlife.org\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/asweetlife.org\/#\/schema\/person\/5de2b093878b82b0ea97917f8fd72585\",\"name\":\"ASweetLife Team\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/asweetlife.org\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/ba76b5c6c27d32738b13f9a8a5cfcf02?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/ba76b5c6c27d32738b13f9a8a5cfcf02?s=96&d=mm&r=g\",\"caption\":\"ASweetLife Team\"},\"url\":\"https:\/\/asweetlife.org\/?author=131\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Atherosclerosis Not Caused by Excess Insulin","description":"A new Joslin Diabetes Center study found that hyperinsulinemia itself does not cause hardening of the arteries, known as atherosclerosis.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/asweetlife.org\/?p=25911","twitter_misc":{"Written by":"ASweetLife Team","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/asweetlife.org\/?p=25911","url":"https:\/\/asweetlife.org\/?p=25911","name":"Atherosclerosis Not Caused by Excess Insulin","isPartOf":{"@id":"https:\/\/asweetlife.org\/#website"},"primaryImageOfPage":{"@id":"https:\/\/asweetlife.org\/?p=25911#primaryimage"},"image":{"@id":"https:\/\/asweetlife.org\/?p=25911#primaryimage"},"thumbnailUrl":"https:\/\/asweetlife.org\/wp-content\/uploads\/2012\/03\/joslin-diabetes-center_logo1-1.png","datePublished":"2012-03-28T12:37:06+00:00","dateModified":"2015-12-30T09:43:32+00:00","author":{"@id":"https:\/\/asweetlife.org\/#\/schema\/person\/5de2b093878b82b0ea97917f8fd72585"},"description":"A new Joslin Diabetes Center study found that hyperinsulinemia itself does not cause hardening of the arteries, known as atherosclerosis.","breadcrumb":{"@id":"https:\/\/asweetlife.org\/?p=25911#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/asweetlife.org\/?p=25911"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/asweetlife.org\/?p=25911#primaryimage","url":"https:\/\/asweetlife.org\/wp-content\/uploads\/2012\/03\/joslin-diabetes-center_logo1-1.png","contentUrl":"https:\/\/asweetlife.org\/wp-content\/uploads\/2012\/03\/joslin-diabetes-center_logo1-1.png","width":128,"height":53,"caption":"joslin diabetes center_logo"},{"@type":"BreadcrumbList","@id":"https:\/\/asweetlife.org\/?p=25911#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/asweetlife.org\/"},{"@type":"ListItem","position":2,"name":"Atherosclerosis Not Caused by Excess Insulin, New Study Shows"}]},{"@type":"WebSite","@id":"https:\/\/asweetlife.org\/#website","url":"https:\/\/asweetlife.org\/","name":"ASweetLife","description":"The Diabetes Magazine","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/asweetlife.org\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/asweetlife.org\/#\/schema\/person\/5de2b093878b82b0ea97917f8fd72585","name":"ASweetLife Team","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/asweetlife.org\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/ba76b5c6c27d32738b13f9a8a5cfcf02?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/ba76b5c6c27d32738b13f9a8a5cfcf02?s=96&d=mm&r=g","caption":"ASweetLife Team"},"url":"https:\/\/asweetlife.org\/?author=131"}]}},"_links":{"self":[{"href":"https:\/\/asweetlife.org\/index.php?rest_route=\/wp\/v2\/posts\/25911"}],"collection":[{"href":"https:\/\/asweetlife.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/asweetlife.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/asweetlife.org\/index.php?rest_route=\/wp\/v2\/users\/131"}],"replies":[{"embeddable":true,"href":"https:\/\/asweetlife.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=25911"}],"version-history":[{"count":0,"href":"https:\/\/asweetlife.org\/index.php?rest_route=\/wp\/v2\/posts\/25911\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/asweetlife.org\/index.php?rest_route=\/wp\/v2\/media\/25916"}],"wp:attachment":[{"href":"https:\/\/asweetlife.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=25911"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/asweetlife.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25911"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/asweetlife.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25911"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}