{"id":3949,"date":"2026-02-13T15:37:45","date_gmt":"2026-02-13T21:37:45","guid":{"rendered":"https:\/\/drakarlacastolo.com\/?p=3949"},"modified":"2026-02-13T15:37:47","modified_gmt":"2026-02-13T21:37:47","slug":"prediabetes-insulin-resistance-how-does-it-affect-the-heart","status":"publish","type":"post","link":"https:\/\/drakarlacastolo.com\/en\/blog\/diagnostic-evaluation\/prediabetes-insulin-resistance-how-does-it-affect-the-heart\/","title":{"rendered":"Prediabetes and insulin resistance: how it affects the heart"},"content":{"rendered":"<p>\u201cI got prediabetes\u201d is often read as \u201cit's not serious yet.\u201d The problem is that <strong>prediabetes and insulin resistance are not an innocent \u201cpre-something\u201d.<\/strong>The following are often the prelude to a cardiometabolic profile that increases cardiovascular risk if allowed to progress (high blood pressure, high triglycerides, fatty liver, increased waist circumference and atherogenic cholesterol).<\/p>\n\n\n\n<p>The goal is not just to \u201cavoid diabetes\u201d. The real goal is <strong>lowering cardiovascular risk<\/strong> correcting the whole package: glucose + blood pressure + lipids + habits.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The most important<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Prediabetes is not an isolated number: it usually signals that metabolism is already heading in the direction of hypertension, dyslipidemia and vascular disease if not corrected in time.<\/li>\n\n\n\n<li>Insulin resistance often coexists with <strong>metabolic syndrome<\/strong> (waist, triglycerides, HDL, blood pressure, glucose): here the risk becomes cumulative.<\/li>\n\n\n\n<li>The most efficient plan combines sustainable habits + clear blood pressure and cholesterol goals + monitoring with metrics (not \u201clet's see if it goes down\u201d).<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">What is prediabetes (and what tests detect it)?<\/h2>\n\n\n\n<p>Prediabetes means that glucose is in an intermediate range: not normal, but still below diabetes. It is identified with tests such as:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Fasting glucose<\/strong> (when it goes \u201cto the limit\u201d)<\/li>\n\n\n\n<li><strong>HbA1c<\/strong> (average glucose of the last months)<\/li>\n\n\n\n<li><strong>Glucose tolerance curve<\/strong> (in selected cases)<\/li>\n<\/ul>\n\n\n\n<p>Two nuances that avoid mistakes:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>A single result does not always define your situation<\/strong>It is advisable to confirm and watch the trend.<\/li>\n\n\n\n<li>Prediabetes <strong>does not define your risk on its own<\/strong>. The real risk depends on the context: pressure, LDL\/non-HDL, waist, history and habits.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">What is insulin resistance?<\/h2>\n\n\n\n<p>This is when the body needs to produce <strong>more insulin<\/strong> to keep glucose in range. There may be years before glucose \u201cspikes\u201d.<\/p>\n\n\n\n<p>It is usually suspected when this pattern appears:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Waist or abdominal weight gain<\/li>\n\n\n\n<li>High triglycerides and\/or low HDL<\/li>\n\n\n\n<li>Fatty liver<\/li>\n\n\n\n<li>High pressure<\/li>\n\n\n\n<li>Glucose\/HbA1c in prediabetes range<\/li>\n<\/ul>\n\n\n\n<p>To understand why cholesterol remains central to cardiovascular prevention, review:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/drakarlacastolo.com\/en\/blog\/lifestyle-prevention\/cholesterol\/\">Cholesterol<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/drakarlacastolo.com\/en\/blog\/diagnostic-evaluation\/ldl-cholesterol-diagnostic-evaluation-objectives\/\">LDL: objectives and evaluation<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How does this affect the heart?<\/h2>\n\n\n\n<p>There are three frequent paths (those that change management):<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1) Accelerates the cardiometabolic \u201cpackage\u201d.<\/h3>\n\n\n\n<p>With insulin resistance it is common to see:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Blood pressure rising<\/li>\n\n\n\n<li>High triglycerides \/ low HDL<\/li>\n\n\n\n<li>Visceral fat (waist)<\/li>\n\n\n\n<li>Low-grade inflammation and endothelial dysfunction (less healthy vessels)<\/li>\n<\/ul>\n\n\n\n<p>This, sustained over time, favors atherosclerosis.<\/p>\n\n\n\n<p>Support yourself with:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/drakarlacastolo.com\/en\/blog\/diagnostic-evaluation\/hypertension\/\">Hypertension<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/drakarlacastolo.com\/en\/blog\/diagnostic-evaluation\/blood-pressure-goals-home-blood-pressure-measurement\/\">Blood pressure: goals and measurement at home<\/a><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2) Increases risk even if \u201cdiabetes is not yet present\u201d.\u201d<\/h3>\n\n\n\n<p>Waiting until \u201cbeing diabetic\u201d to act is often too late. The real value is in <strong>correct early<\/strong> (habits, blood pressure and cholesterol) and monitor trends.<\/p>\n\n\n\n<p>If you are already living with diabetes\/prediabetes or want clear goals:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/drakarlacastolo.com\/en\/blog\/special-populations\/diabetes-and-heart-goals\/\">Diabetes and heart: goals<\/a><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3) It is mixed with cholesterol more \u201cdeterminant\u201d than it seems.<\/h3>\n\n\n\n<p>Many people concentrate on glucose and neglect the <strong>atherogenic cholesterol<\/strong> (LDL\/non-HDL). In prevention, this usually weighs more on the risk of plaque. Therefore, the plan is decided with <strong>overall risk<\/strong>, not with a single figure.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What to check (so as not to treat blindly)<\/h2>\n\n\n\n<p>In a well-done evaluation, it is normally integrated:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Glucose\/HbA1c Trend<\/li>\n\n\n\n<li>Blood pressure (and correct measurement technique)<\/li>\n\n\n\n<li>Complete lipid profile (LDL, HDL, TG and non-HDL)<\/li>\n\n\n\n<li>Waist\/abdominal weight<\/li>\n\n\n\n<li>Sleep, alcohol, activity, food<\/li>\n\n\n\n<li>Family history of infarction or \u201cearly\u201d vascular event\u201d<\/li>\n<\/ul>\n\n\n\n<p>If there is suspicion of \u201cmasked\u201d or highly variable pressure, it may help:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/drakarlacastolo.com\/en\/studies\/24h-pressure-map\/\">24h pressure MAP<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/drakarlacastolo.com\/en\/blog\/diagnostic-evaluation\/24-hour-map\/\">MAP 24 hours (guide)<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">When medical evaluation is advisable (without postponing)<\/h2>\n\n\n\n<p>Agenda assessment if any of them are met:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>HbA1c\/glucose rising in consecutive checks<\/li>\n\n\n\n<li>Prediabetes + high blood pressure (or difficulty controlling it)<\/li>\n\n\n\n<li>Prediabetes + high triglycerides, fatty liver or enlarged waistline<\/li>\n\n\n\n<li>Family history of myocardial infarction\/early vascular event<\/li>\n\n\n\n<li>Symptoms: shortness of breath on exertion, chest tightness, palpitations with dizziness or faintness<\/li>\n<\/ul>\n\n\n\n<p>Useful readings:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/drakarlacastolo.com\/en\/blog\/cardiac-conditions\/shortness-of-breath-when-it-is-of-the-heart\/\">Shortness of breath: when it may be heart-related<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/drakarlacastolo.com\/en\/blog\/emergencies\/chest-pain-in-an-emergency\/\">Chest pain: when is it an emergency?<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/drakarlacastolo.com\/en\/blog\/diagnostic-evaluation\/palpitations-common-causes-and-when-to-worry\/\">Palpitations: when to worry<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/drakarlacastolo.com\/en\/blog\/diagnostic-evaluation\/dizziness-and-fainting-syncope-causes-and-cardiology-study\/\">Dizziness and fainting: syncope<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">What usually helps (without promising results)<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Food (practical, not perfect)<\/h3>\n\n\n\n<p>In insulin resistance, it usually has a high impact:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Reduce sugar-sweetened beverages, frequent desserts and refined flours<\/li>\n\n\n\n<li>Watch carbohydrate portions (even \u201chealthy\u201d if they were excessive).<\/li>\n\n\n\n<li>Prioritize adequate protein and fiber<\/li>\n<\/ul>\n\n\n\n<p>Guide: <a href=\"https:\/\/drakarlacastolo.com\/en\/blog\/lifestyle-prevention\/cardioprotective-nutrition\/\">Cardioprotective nutrition<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Physical activity (constancy &gt; intensity)<\/h3>\n\n\n\n<p>Improves insulin sensitivity and lowers overall risk. To make it safe:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/drakarlacastolo.com\/en\/blog\/lifestyle-prevention\/physical-activity\/\">Physical activity<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/drakarlacastolo.com\/en\/blog\/lifestyle-prevention\/safe-physical-activity-heart\/\">Heart-safe physical activity<\/a><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Sleep and stress (indirect, but real lever)<\/h3>\n\n\n\n<p>If sleep and stress are bad, habits and metabolic control tend to worsen:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/drakarlacastolo.com\/en\/blog\/lifestyle-prevention\/stress-sleep-health-heart\/\">Stress, sleep and heart health<\/a><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Medications (only if applicable)<\/h3>\n\n\n\n<p>In some profiles, in addition to habits, treatment is considered according to overall risk (age, blood pressure, lipids, weight, history). The rule: do not treat \u201cisolated glucose\u201d, but rather <strong>comprehensive cardiovascular prevention<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What the evaluation may include (to decide the plan)<\/h2>\n\n\n\n<p>Depending on the case, it may include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/drakarlacastolo.com\/en\/cardiology-consultation\/\">Cardiology consultation<\/a> to integrate risk and plan<\/li>\n\n\n\n<li><a href=\"https:\/\/drakarlacastolo.com\/en\/cardiac-checkup\/\">Cardiac check up<\/a> as a comprehensive review<\/li>\n\n\n\n<li>Baseline or symptoms: <a href=\"https:\/\/drakarlacastolo.com\/en\/studies\/electrocardiogram-echocardiogram\/\">Electrocardiogram<\/a><\/li>\n\n\n\n<li>If there are palpitations: <a href=\"https:\/\/drakarlacastolo.com\/en\/studies\/24h-holter-echocardiography\/\">Holter ECG 24h<\/a><\/li>\n\n\n\n<li>According to context: <a href=\"https:\/\/drakarlacastolo.com\/en\/studies\/doppler-echocardiogram\/\">Doppler echocardiogram<\/a><\/li>\n<\/ul>\n\n\n\n<p>If you want a practical route so you don't improvise, the first step is usually a thorough assessment and a measurable plan. You can <a href=\"https:\/\/drakarlacastolo.com\/en\/contact\/\">schedule an appointment here<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">References<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/diabetes.org\/about-diabetes\/diagnosis?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noopener\">American Diabetes Association. Diabetes Diagnosis &amp; Tests<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.cdc.gov\/diabetes\/diabetes-testing\/index.html?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noopener\">CDC. Diabetes Testing<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.uspreventiveservicestaskforce.org\/uspstf\/recommendation\/screening-for-prediabetes-and-type-2-diabetes?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noopener\">USPSTF. Screening for Prediabetes and Type 2 Diabetes.<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>\u201cMe sali\u00f3 prediabetes\u201d suele leerse como \u201ctodav\u00eda no es grave\u201d. El problema es que la prediabetes y la resistencia a la insulina no son un \u201cpre-algo\u201d inocente: con frecuencia son la antesala de un perfil cardiometab\u00f3lico que aumenta el riesgo cardiovascular si se deja avanzar (presi\u00f3n alta, triglic\u00e9ridos altos, h\u00edgado graso, aumento de cintura y [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3949","post","type-post","status-publish","format-standard","hentry","category-evaluacion-diagnostico"],"acf":[],"_links":{"self":[{"href":"https:\/\/drakarlacastolo.com\/en\/wp-json\/wp\/v2\/posts\/3949","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/drakarlacastolo.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/drakarlacastolo.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/drakarlacastolo.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/drakarlacastolo.com\/en\/wp-json\/wp\/v2\/comments?post=3949"}],"version-history":[{"count":1,"href":"https:\/\/drakarlacastolo.com\/en\/wp-json\/wp\/v2\/posts\/3949\/revisions"}],"predecessor-version":[{"id":3951,"href":"https:\/\/drakarlacastolo.com\/en\/wp-json\/wp\/v2\/posts\/3949\/revisions\/3951"}],"wp:attachment":[{"href":"https:\/\/drakarlacastolo.com\/en\/wp-json\/wp\/v2\/media?parent=3949"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/drakarlacastolo.com\/en\/wp-json\/wp\/v2\/categories?post=3949"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/drakarlacastolo.com\/en\/wp-json\/wp\/v2\/tags?post=3949"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}