{"id":150302313644,"date":"2023-01-13T21:06:44","date_gmt":"2023-01-14T02:06:44","guid":{"rendered":"https:\/\/bioptimizers.com\/blog\/?p=150302313644"},"modified":"2024-08-19T05:43:01","modified_gmt":"2024-08-19T09:43:01","slug":"what-is-leptin-resistance-2","status":"publish","type":"post","link":"https:\/\/bioptimizers.com\/blog\/what-is-leptin-resistance-2\/","title":{"rendered":"What Is Leptin And Why Does It Matter For Fat Loss?"},"content":{"rendered":"\n<p>Leptin, a hormone produced by your fat cells, is a major one. It helps your body maintain weight at your weight <a href=\"https:\/\/bioptimizers.com\/blog\/what-are-the-weight-setpoint\/?gl=63484dd03f5d60fe5d8b456c\" target=\"_blank\" rel=\"noreferrer noopener\">setpoint and settling point<\/a>.<\/p>\n\n\n\n<p>Leptin explains why factors such as sleep, inflammation, toxic exposure, and insulin resistance can make it very difficult to lose fat and keep it off. Sometimes people can also develop <strong>leptin resistance<\/strong>, so the body is less responsive to the hormone signal, even if leptin is high.&nbsp;<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"679\" height=\"514\" src=\"https:\/\/bioptimizers.com\/blog\/wp-content\/uploads\/2023\/01\/Optimized-GettyImages-155381213.jpg\" alt=\"A ribbons + ball-and-stick model of a molecule of Human Leptin, a hormone produced by body fat. \" class=\"wp-image-150302313645\"\/><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading\"><strong>What Is Leptin? A Deep Dive Of The Hormone<\/strong><\/h2>\n\n\n\n<p><strong>Leptin<\/strong> is a hormone responsible for controlling your hunger and your feeling of fullness. The more leptin you have in your bloodstream, the less hungry you should be. As leptin suppresses your appetite and lets your brain know when to stop eating, this hormone can dramatically impact the success of your weight loss journey.<\/p>\n\n\n\n<p>The word <strong>leptin<\/strong> is derived from the Greek word <em>leptos<\/em>, which means \u201cthin.\u201d Some people call it \u201cthe satiety hormone\u201d or even \u201cthe fat controller.\u201d But for the significant role leptin plays in the body, our knowledge about it is fairly new. In fact, it wasn\u2019t discovered until 1994 during an obesity study using mice,<span class=\"custom-citation\" data-id=\"ref-1\"><\/span> and scientists are still trying to fully understand its effects.<\/p>\n\n\n\n<p>When researchers initially discovered leptin, they thought leptin replacement therapy would be a miracle treatment for obesity. However, when they gave obese humans leptin, they didn\u2019t lose weight as expected due to the complexity of leptin and leptin resistance.<span class=\"custom-citation\" data-id=\"ref-2\"><\/span> The discovery has changed how we understand weight gain. Also, they now know that fat tissues are an active endocrine (hormone-producing) organ rather than just a place for storing calories.&nbsp;<\/p>\n\n\n\n<p>Aside from controlling your appetite, leptin also helps to regulate the following:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Metabolism<\/h3>\n\n\n\n<p>For example, in rats, administering leptin into their brain inhibits the production of new fat molecules, while stimulating fat burning in fat cells and liver.<span class=\"custom-citation\" data-id=\"ref-3\"><\/span>&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Energy Balance<\/h3>\n\n\n\n<p>Your body relies on leptin levels to tell whether it is in a famine, has enough energy stored, or has been consuming enough food lately.<span class=\"custom-citation\" data-id=\"ref-4\"><\/span>&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Immune System<\/h3>\n\n\n\n<p>Leptin interacts closely with your immune system. With a similar structure to the cytokine IL-6, it is pro-inflammatory, which explains why being obese is inflammatory.<span class=\"custom-citation\" data-id=\"ref-5\"><\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Neuroendocrine System:<\/h3>\n\n\n\n<p>Leptin acts on your hypothalamus and affects many neurohormones, including many that control appetite and body composition, such as<span class=\"custom-citation\" data-id=\"ref-6\"><\/span><span class=\"custom-citation\" data-id=\"ref-7\"><\/span>:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Growth hormone-releasing hormone<\/strong><\/li><li>Somatostatin<\/li><li><strong>Gonadotrophins<\/strong><\/li><li>Thyroid hormone releasing hormones<\/li><li><strong>Neuropeptide Y<\/strong><\/li><li>Adrenal hormones<\/li><\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"683\" height=\"512\" src=\"https:\/\/bioptimizers.com\/blog\/wp-content\/uploads\/2023\/01\/GettyImages-1130747672.jpg\" alt=\"Hunger-fullness scale 0 to 10 for intuitive and mindful eating and diet control.\" class=\"wp-image-150302313646\"\/><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading\">Where Does Leptin Come From And How Does It Work?<\/h2>\n\n\n\n<p>Your fat cells, or <em>adipose tissue<\/em>, produce and release leptin. Remember that fat isn&#8217;t just in your belly, thighs, and love handles\u2014fat exists throughout your whole body:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Under your skin<\/strong>, or <em>subcutaneous fat<\/em><\/li><li><strong>Surrounding your internal organs<\/strong>, or <em>visceral fat<\/em><\/li><li><strong>In the middle cavity of your bones<\/strong>, or <em>bone marrow fat<\/em>.<\/li><\/ul>\n\n\n\n<p>The amount of fat in your body determines your blood leptin levels. In other words, the more adipose tissue you have, the more leptin you have circulating in your bloodstream. The less body fat you have, the less leptin you have.<\/p>\n\n\n\n<p>Leptin works by binding to receptors found in the central nervous system (brain and spinal cord) and other peripheral tissues such as the liver, pancreas, and kidneys.<span class=\"custom-citation\" data-id=\"ref-8\"><\/span><\/p>\n\n\n\n<p>But of all these places, leptin acts primarily on the <strong>hypothalamus<\/strong>, a region of the brain that is involved in the regulation of many essential bodily functions. The hypothalamus produces hormones that regulate:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Heart rate<\/strong><\/li><li>Body temperature<\/li><li><strong>Hunger and thirst<\/strong><\/li><li>Mood and sex drive<\/li><li><strong>Sleep<\/strong><\/li><li>Hormone producing glands<span class=\"custom-citation\" data-id=\"ref-9\"><\/span><span class=\"custom-citation\" data-id=\"ref-10\"><\/span><\/li><\/ul>\n\n\n\n<p>While the role of your hypothalamus is essential, your balance of leptin and its receptors affect your hypothalamus. This includes the regulation of your energy, metabolism, and neuroendocrine function.<span class=\"custom-citation\" data-id=\"ref-11\"><\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>What Are Normal Leptin Levels?<\/strong><\/h3>\n\n\n\n<p>While the leptin levels in your body can definitely vary depending on your age, weight, and gender, normal ranges for leptin are around 0.5-15 nanograms per milliliter (ng\/mL).<span class=\"custom-citation\" data-id=\"ref-12\"><\/span><\/p>\n\n\n\n<p>Elevated leptin can be an issue because it may indicate leptin resistance, which can lead to further weight gain and other problems. In rare cases of genetic mutations that cause total leptin deficiency, the child with the gene develops severe obesity. However, in most people with normal leptin genes, obesity causes elevated blood leptin.<span class=\"custom-citation\" data-id=\"ref-13\"><\/span><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"633\" height=\"551\" src=\"https:\/\/bioptimizers.com\/blog\/wp-content\/uploads\/2023\/01\/GettyImages-1424339859.jpg\" alt=\"Blood sample for Leptin test.\" class=\"wp-image-150302313647\"\/><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading\">What Can Lower Leptin Levels Or Interfere With Leptin Function?<\/h2>\n\n\n\n<p>Naturally, eating less and losing fat can lower leptin levels. However, the following can also lower leptin functions.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Sleep Deprivation<\/strong><\/h3>\n\n\n\n<p>Sleep deprivation doesn\u2019t directly cause leptin resistance, but it significantly increases hunger by reducing leptin and increasing ghrelin. It also adds to insulin resistance and weight gain. In the long run, consistent inadequate sleep leads to lower leptin and leptin resistance.<span class=\"custom-citation\" data-id=\"ref-14\"><\/span>&nbsp;&nbsp;<\/p>\n\n\n\n<p><a href=\"https:\/\/bioptimizers.com\/blog\/how-to-maximize-your-sleep-quality\/?gl=63484dc13f5d60fe5d8b456b\" target=\"_blank\" rel=\"noreferrer noopener\">Sleep quality<\/a> is also essential for overall healthy leptin function. You want deep, uninterrupted sleep every night. Sleep disorders can really throw a curveball at leptin.&nbsp;<\/p>\n\n\n\n<p>For example, obesity increases your risk of having obstructive sleep apnea (OSA). With OSA, your airway completely or partially collapses, disrupting your sleep and oxygen levels.<span class=\"custom-citation\" data-id=\"ref-15\"><\/span> Therefore leptin resistance, obesity, and inadequate sleep can create a domino effect, with one problem contributing to the other.&nbsp;<\/p>\n\n\n\n<p>This is why staying proactive with all areas of your health is so important. If you never feel like you get enough sleep, speak to your doctor about getting a sleep study.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Yo-Yo Dieting<\/strong><\/h3>\n\n\n\n<p><a href=\"https:\/\/bioptimizers.com\/blog\/what-happens-when-you-regain-weight\/?gl=6356241f3f5d608d7d8b4567\" target=\"_blank\" rel=\"noreferrer noopener\">Yo-Yo dieting<\/a>, or sometimes called weight cycling, is repeatedly losing weight and then gaining it back. This phenomenon highlights the difficulties of long-term behavioral change\u2014over 95% of dieters find it easy to initially lose weight but then struggle to maintain it.<\/p>\n\n\n\n<p>It happens like this: when you engage in a diet and lose weight, your fat cells don\u2019t just disappear\u2014they shrink, and they produce less leptin than before. Less leptin will increase your hunger and slow down your metabolism, resulting in a huge difficulty to maintain a strict diet.&nbsp;<\/p>\n\n\n\n<p>When you gain the weight back, your body produces new fat cells on top of the ones that are still there. As a result, you increase the chance of actually gaining more weight than you had to begin with. And it\u2019s not just the number of fat cells that determine how much leptin they excrete, but also how full of fat they are.<span class=\"custom-citation\" data-id=\"ref-16\"><\/span><\/p>\n\n\n\n<p>The effects of weight fluctuation with yo-yo dieting increases your risk of gaining more weight over time, and increases your risk for obesity.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion:<\/h2>\n\n\n\n<p>Leptin is a crucial hormone to manage if you want to lose weight and keep it off long-term. Another topic to keep in mind is leptin resistance, which is when high leptin levels blunt the effects of leptin.<\/p>\n\n\n\n<p>Want to learn more about how to achieve and keep your nutrition results long-term? The Nutrition Bible is coming soon. Sign up here to join the waiting list and get your first chapter for free.<\/p>\n\n\n<div class=\"fl-builder-content fl-builder-content-150302315209 fl-builder-template fl-builder-module-template fl-builder-global-templates-locked\" data-post-id=\"150302315209\"><div class=\"fl-module fl-module-html fl-node-64abdf9f4aaf9\" data-node=\"64abdf9f4aaf9\">\n\t<div class=\"fl-module-content fl-node-content\">\n\t\t<div class=\"fl-html\">\n\t<a href=\"https:\/\/bioptimizers.com\/shop\/products\/breakthrough-sleep-stack?gl=64932b943f5d60013a8b4567\" title=\"Breakthrough Sleep Stack\" style=\"outline:none;text-decoration:none;border:0;\" target=\"_blank\">\n<picture>\n    <source media=\"(max-width: 640px) and (min-width: 1px)\" srcset=\"https:\/\/fb-v1.cdn-bio.com\/assets\/uploads\/1f20-a9ec-d5ad-453f_mag-dream-sb-mobile.png\" type=\"image\/png\">\n    <source srcset=\"https:\/\/fb-v1.cdn-bio.com\/assets\/uploads\/ad85-047d-5c16-4473_mag-dream-sb-desktop.png\" type=\"image\/png\">\n    <img decoding=\"async\" src=\"https:\/\/fb-v1.cdn-bio.com\/assets\/uploads\/ad85-047d-5c16-4473_mag-dream-sb-desktop.png\" load=\"lazy\" alt=\"BIOptimize My Sleep Now\">\n<\/picture>\n<\/a>\n<center>Ad<\/center>\n<\/div>\n\t<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>To lose weight, you obviously need to be in a caloric deficit. However, your body is not a simple furnace that burns calories\u2013many factors regulate how you respond to foods. <\/p>\n","protected":false},"author":55,"featured_media":150302313645,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[33],"tags":[],"class_list":["post-150302313644","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-health"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What Is Leptin And Why Does It Matter For Fat Loss? - BIOptimizers Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/bioptimizers.com\/blog\/what-is-leptin-resistance-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What Is Leptin And Why Does It Matter For Fat Loss? - BIOptimizers Blog\" \/>\n<meta property=\"og:description\" content=\"To lose weight, you obviously need to be in a caloric deficit. 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Harvey, BSN, RN is a registered nurse and medical writer. He received a BS in nursing and healthcare administration from the University of Michigan, and studied polysomnography from the Atlanta School of Sleep Medicine and Technology. He\u2019s a published author in the Journal of Radiology Nursing, and runs a blog about healthcare.\",\"url\":\"https:\/\/bioptimizers.com\/blog\/author\/aaron-h\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"What Is Leptin And Why Does It Matter For Fat Loss? - BIOptimizers Blog","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:\/\/bioptimizers.com\/blog\/what-is-leptin-resistance-2\/","og_locale":"en_US","og_type":"article","og_title":"What Is Leptin And Why Does It Matter For Fat Loss? - BIOptimizers Blog","og_description":"To lose weight, you obviously need to be in a caloric deficit. 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