{"id":239365,"date":"2021-04-08T12:45:45","date_gmt":"2021-04-08T10:45:45","guid":{"rendered":"https:\/\/gymbeam.com\/blog\/?p=239365"},"modified":"2024-04-22T07:49:51","modified_gmt":"2024-04-22T05:49:51","slug":"what-happens-to-your-body-if-you-dont-eat-enough","status":"publish","type":"post","link":"https:\/\/gymbeam.com\/blog\/what-happens-to-your-body-if-you-dont-eat-enough\/","title":{"rendered":"What Happens to Your Body If You Don&#8217;t Eat Enough?"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_72 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/gymbeam.com\/blog\/what-happens-to-your-body-if-you-dont-eat-enough\/#What_happens_if_you_eat_too_little_and_become_a_weight-loss_sprinter\" title=\"What happens if you eat too little and become a weight-loss sprinter?\">What happens if you eat too little and become a weight-loss sprinter?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/gymbeam.com\/blog\/what-happens-to-your-body-if-you-dont-eat-enough\/#1_%E2%80%9CSlowed_metabolism%E2%80%9D\" title=\"1. &#8220;Slowed metabolism&#8221;\">1. &#8220;Slowed metabolism&#8221;<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/gymbeam.com\/blog\/what-happens-to-your-body-if-you-dont-eat-enough\/#2_Female_Athlete_Triad_Increased_risk_of_fractures_menstrual_problems_and_low_energy_availability\" title=\"2. Female Athlete Triad: Increased risk of fractures, menstrual problems and low energy availability\">2. Female Athlete Triad: Increased risk of fractures, menstrual problems and low energy availability<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/gymbeam.com\/blog\/what-happens-to-your-body-if-you-dont-eat-enough\/#3_Mood_swings_fatigue_and_poor_sleep\" title=\"3. Mood swings, fatigue and poor sleep\">3. Mood swings, fatigue and poor sleep<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/gymbeam.com\/blog\/what-happens-to-your-body-if-you-dont-eat-enough\/#4_Hunger_cravings_constant_thoughts_of_food_and_overeating\" title=\"4. Hunger, cravings, constant thoughts of food and overeating\">4. Hunger, cravings, constant thoughts of food and overeating<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/gymbeam.com\/blog\/what-happens-to-your-body-if-you-dont-eat-enough\/#5_Problems_with_hair_nails_and_skin\" title=\"5. Problems with hair, nails and skin\">5. Problems with hair, nails and skin<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/gymbeam.com\/blog\/what-happens-to-your-body-if-you-dont-eat-enough\/#6_Constant_feeling_of_being_cold\" title=\"6. Constant feeling of being cold\">6. Constant feeling of being cold<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/gymbeam.com\/blog\/what-happens-to-your-body-if-you-dont-eat-enough\/#7_Weakened_immunity_digestive_and_cardiovascular_problems\" title=\"7. Weakened immunity, digestive and cardiovascular problems\">7. Weakened immunity, digestive and cardiovascular problems<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/gymbeam.com\/blog\/what-happens-to-your-body-if-you-dont-eat-enough\/#8_You_may_face_a_shortage_of_essential_micronutrients\" title=\"8. You may face a shortage of essential micronutrients\">8. You may face a shortage of essential micronutrients<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/gymbeam.com\/blog\/what-happens-to-your-body-if-you-dont-eat-enough\/#9_Deterioration_of_hormonal_profile_and_decreased_sex_drive\" title=\"9. Deterioration of hormonal profile and decreased sex drive\">9. Deterioration of hormonal profile and decreased sex drive<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/gymbeam.com\/blog\/what-happens-to-your-body-if-you-dont-eat-enough\/#10_Impaired_sports_performance_and_regeneration\" title=\"10. Impaired sports performance and regeneration\">10. Impaired sports performance and regeneration<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/gymbeam.com\/blog\/what-happens-to-your-body-if-you-dont-eat-enough\/#A_perfect_weight_or_perfect_body_does_not_exist_we_are_all_original\" title=\"A perfect weight or perfect body does not exist, we are all original\">A perfect weight or perfect body does not exist, we are all original<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/gymbeam.com\/blog\/what-happens-to-your-body-if-you-dont-eat-enough\/#What_should_you_remember\" title=\"What should you remember?\">What should you remember?<\/a><\/li><\/ul><\/nav><\/div>\n\n<p>The simple effort to look good or the <strong>desire for a toned body with a minimum of fat<\/strong> is one of the most common reasons why we <strong>commence a diet<\/strong> that is often accompanied by a hellishly demanding training plan. Since most people want to see the results in 5 days at the latest, they start eating salads three times a day, while having strength training four times a week and going for a run three times a week. Yes, but after a few days, they may start to feel like <strong>something&#8217;s not quite right<\/strong>. There is not enough juice for training, they feel more and more tired, and during the day it is impossible to focus on something due to constant thoughts about food. Then they start asking themselves if this is really how they&#8217;re going to <strong>achieve a dream body<\/strong> similar to the ones the sporty couple had on the cover of Muscle &amp; Fitness.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>Well, they won&#8217;t, because<\/strong> eating drastically little and training hard is not the way to success, but rather the hospital. This and other similar drastic approaches have a number of negative effects on our body. <strong>Every cell in the body is dependent on<\/strong> <strong>energy<\/strong>, and when the body begins to receive hormonal signals that food and energy are scarce, it begins to conserve it, limiting the optimal functioning of a number of body systems that are not exactly a priority for preserving life. It&#8217;s <strong>basically like crisis<\/strong> <strong>management<\/strong>. Energy is simply saved wherever it can be.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Everybody needs energy for the healthy course of all basic bodily functions. This brings you to <strong>energy balance<\/strong>, which expresses how energy intake is reflected in your body weight.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Negative energy balance:<\/strong> A state where you burn more energy than you receive, lose weight and lose body mass.<\/li>\n\n\n\n<li><strong>Balanced&nbsp;energy&nbsp;balance:&nbsp;<\/strong>A state where you have an average&nbsp; energy intake and output in equilibrium and maintain body weight.<\/li>\n\n\n\n<li><strong>Positive&nbsp;energy&nbsp;balance:<\/strong>&nbsp;A&nbsp;condition&nbsp;where&nbsp;you&nbsp;burn&nbsp;less&nbsp;energy&nbsp;than&nbsp;you&nbsp;take&nbsp;in&nbsp;and&nbsp;gain&nbsp;weight.<\/li>\n<\/ul>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>As&nbsp;you&nbsp;may&nbsp;all&nbsp;suspect,&nbsp;<strong>no&nbsp;extreme&nbsp;is&nbsp;good<\/strong>, even if the negative and positive energy balances are too high. The key to proper&nbsp;weight loss or gain is to receive slightly less or more energy than the optimal energy intake. <strong>It&#8217;s not a sprint, it&#8217;s a marathon<\/strong>. <strong>Weight-loss sprinters usually run out of breath<\/strong> and go back to business as usual. Conversely, marathoners achieve the desired results with consistent work.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>If you want to calculate how much energy you should ideally&nbsp;receive per day, our <span style=\"color: #ff6600\"><strong><a href=\"https:\/\/gymbeam.com\/blog\/online-energy-intake-and-macronutrient-calculator\/\" target=\"_blank\" aria-label=\"Online Energy Intake and Macronutrients Calculator (opens in a new tab)\" rel=\"noreferrer noopener\" class=\"ek-link\">Online Energy Intake and Macronutrients Calculator<\/a> <\/strong><span style=\"color: #000000\">will assist.<\/span><\/span><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1124\" height=\"776\" src=\"https:\/\/gymbeam.cz\/blog\/wp-content\/uploads\/2021\/04\/GT_0029____OK-1124x776.jpg\" alt=\"What is energy balance and calorie deficit?\" class=\"wp-image-237613\" style=\"width:843px;height:582px\" title=\"What is energy balance and calorie deficit?\" srcset=\"https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/GT_0029____OK-1124x776.jpg 1124w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/GT_0029____OK-400x276.jpg 400w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/GT_0029____OK-1536x1061.jpg 1536w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/GT_0029____OK-2048x1415.jpg 2048w\" sizes=\"auto, (max-width: 1124px) 100vw, 1124px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading is-style-default\"><span class=\"ez-toc-section\" id=\"What_happens_if_you_eat_too_little_and_become_a_weight-loss_sprinter\"><\/span>What happens if you eat too little and become a weight-loss sprinter? <span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>If you excessively reduce energy supply in your diet and exercise regularly, you can get into a <strong>state of a relative lack of energy in<\/strong> <strong>sport called RED-S<\/strong>. This concept covers a whole series of events, processes and changes that take place in your body, which are not very pleasant or healthy. From a physiological point of view, you can observe a <strong>negative effect on immune<\/strong> <strong>function, bone or heart health<\/strong>. However, it is not only people who deliberately eat little and over-sport who are at risk because virtually every person with a high energy output can &#8220;work their way up&#8221; to a low energy intake. <span style=\"color: #ff6600\">[1\u20132] <\/span><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Typically, we can talk about athletes competing in a discipline&nbsp;that has <strong>high aesthetic demands, or those where lower body<\/strong> <strong>weight<\/strong> can be a competitive advantage. This list includes, for example, <strong>bodybuilding and fitness, gymnastics, ballet, combat<\/strong> <strong>and endurance sports, athletics, equestrian and beach<\/strong> <strong>volleyball.<\/strong> Add to that, for example, a physically demanding profession, and at first, you may not even know that you are at risk of insufficient energy intake.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading is-style-default\">What does it mean to eat very little?<\/h3>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"749\" height=\"1124\" src=\"https:\/\/gymbeam.cz\/blog\/wp-content\/uploads\/2021\/04\/image4-2__-749x1124.jpg\" alt=\"What does it mean to eat very little?\" class=\"wp-image-237642\" title=\"What does it mean to eat very little?\" srcset=\"https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/image4-2__-749x1124.jpg 749w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/image4-2__-267x400.jpg 267w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/image4-2__-1024x1536.jpg 1024w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/image4-2__-1365x2048.jpg 1365w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/image4-2__-scaled.jpg 1707w\" sizes=\"auto, (max-width: 749px) 100vw, 749px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p>You can calculate the risk of insufficient energy intake using&nbsp;<strong>energy availability (EA)<\/strong>. This expresses the amount of energy you have left after subtracting the energy spent on exercise. At the same time, you need to know fat-free mass (FFM) to calculate it. You only need to know the percentage of body fat to determine it.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>Energy&nbsp;availability:&nbsp;<\/strong><\/p>\n\n\n\n<p>Jane is 60 kilograms, 15% body fat (51 kg FFM), receives 1,800 kcal and burns 800 kcal per day through sport.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>EA = EI (energy intake) \u2013 EEE (exercise energy expenditure) = 1&nbsp;800 \u2013 800 = 1 000 kcal<\/li>\n\n\n\n<li>EA\/FFM (fat-free mass) = 1 000\/51 = <strong>19.6 kcal\/kg\/FFM<\/strong> \u2013 energy availability risk<\/li>\n<\/ul>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ol class=\"wp-block-list\">\n<li>The&nbsp;<strong>risk&nbsp;value<\/strong>&nbsp;is&nbsp;less&nbsp;than&nbsp;30&nbsp;kcal\/kg\/FFM<\/li>\n\n\n\n<li><strong>Value&nbsp;tolerated<\/strong> in the short term for weight loss is 30-45 kcal\/kg\/FFM<\/li>\n\n\n\n<li>The<strong>&nbsp;optimal&nbsp;value<\/strong> for men is 40 kcal\/kg\/FFM and for women it is 45 kcal\/kg\/FFM<\/li>\n<\/ol>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Jane consumes approximately 1300 fewer calories than she should and is thus threatened by the emergence of a number of health problems, which we will discuss below. The problem of insufficient energy intake <strong>affects both women and men<\/strong>. In women, this problem is particularly visible because of the impact of energy availability on <strong>menstrual problems<\/strong>. <span style=\"color: #ff6600\">[3]<\/span><\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading is-style-default\"><span class=\"ez-toc-section\" id=\"1_%E2%80%9CSlowed_metabolism%E2%80%9D\"><\/span>1. &#8220;Slowed metabolism&#8221;<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Especially if you are taking in <strong>insufficient amounts of calories for an extended period of time, or if you have been through a series of particularly extreme diets<\/strong> in the past and your body has not yet recovered, you can really see something like a <strong>\u201cslowing metabolism.\u201c<\/strong> This term is also known as <strong>adaptive thermogenesis<\/strong>. This term refers to a greater reduction in energy output than you could predict and calculate on the basis of body weight. <span style=\"color: #ff6600\">[4-7]<\/span><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>And how much of an unexpected reduction in energy output can there be? This is a deviation of about <strong>10-15%<\/strong> <strong>from the<\/strong> <strong>calculated assumption or about 50-500 kcal<\/strong>. You can see this as a cascade of changes and measures taken by the body to keep you alive during periods of energy deprivation. You simply cannot outsmart evolutionary survival mechanisms. <span style=\"color: #ff6600\">[4-7]<\/span><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Further efforts to lose weight in this case would somehow be <strong>destined for failure<\/strong>. That is why, in this case, you need to give time to the process and slowly increase energy intake to healthier values so that you are in the optimal energy availability and energy intake band.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>If you are interested in the subject of a slowed metabolism in more detail, read our article <span style=\"color: #ff6600\"><strong><a href=\"https:\/\/gymbeam.com\/blog\/could-your-metabolism-have-slowed-down-or-be-damaged-5-tips-for-accelerating-your-metabolism\/\" target=\"_blank\" aria-label=\"Can I Have A Slowed or Damaged Metabolism? 5 Tips to Speed Up Your Metabolism. (opens in a new tab)\" rel=\"noreferrer noopener\" class=\"ek-link\">Can I Have A Slowed or Damaged Metabolism? 5 Tips to Speed Up Your Metabolism.<\/a><\/strong><\/span><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1124\" height=\"749\" src=\"https:\/\/gymbeam.cz\/blog\/wp-content\/uploads\/2021\/04\/aBaa-_-image00042-1124x749.jpeg\" alt=\"Slowed metabolism during weight loss\" class=\"wp-image-237658\" style=\"width:843px;height:562px\" title=\"Slowed metabolism during weight loss\" srcset=\"https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/aBaa-_-image00042-1124x749.jpeg 1124w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/aBaa-_-image00042-400x267.jpeg 400w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/aBaa-_-image00042-1536x1024.jpeg 1536w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/aBaa-_-image00042-2048x1365.jpeg 2048w\" sizes=\"auto, (max-width: 1124px) 100vw, 1124px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading is-style-default\"><span class=\"ez-toc-section\" id=\"2_Female_Athlete_Triad_Increased_risk_of_fractures_menstrual_problems_and_low_energy_availability\"><\/span>2. Female Athlete Triad: Increased risk of fractures, menstrual problems and low energy availability <span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The <strong>Female Athlete Triad<\/strong> is a combination of three co-occurring factors in the female body in the form of <strong>menstrual problems, bone thinning and low energy availability <\/strong>(with or without diagnosed eating disorders). This phenomenon is most common among young female athletes with low energy intake and a high volume sports load. We can typically name the whole area of fitness (not only racing), gymnastics, figure skating, athletics or endurance sports as contributing to this phenomenon. <span style=\"color: #ff6600\">[8-11]&nbsp;<\/span><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"747\" height=\"1124\" src=\"https:\/\/gymbeam.cz\/blog\/wp-content\/uploads\/2021\/04\/IMG_02354-747x1124.jpg\" alt=\"Female Athlete Triad: Increased risk of fractures, menstrual problems and low energy availability \" class=\"wp-image-237686\" title=\"Female Athlete Triad: Increased risk of fractures, menstrual problems and low energy availability \" srcset=\"https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/IMG_02354-747x1124.jpg 747w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/IMG_02354-266x400.jpg 266w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/IMG_02354-1021x1536.jpg 1021w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/IMG_02354.jpg 1330w\" sizes=\"auto, (max-width: 747px) 100vw, 747px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h3 class=\"wp-block-heading is-style-default\">Female Athlete Triad<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Low energy availability represents a threshold of 30 kcal\/kg\/FFM,&nbsp;<\/strong> which should not fall further in the long term. The optimum value is considered to be 45 kcal\/kg\/FFM.<\/li>\n\n\n\n<li><strong>Menstrual&nbsp;problems<\/strong> in the form of irregularity or complete absence of.<\/li>\n\n\n\n<li><strong>Decreased&nbsp;bone&nbsp;density<\/strong> leading to bone thinning (osteoporosis) and the result is an increased risk of fractures (especially fatigue).<\/li>\n<\/ol>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>With&nbsp;the&nbsp;loss&nbsp;of&nbsp;menstruation,&nbsp;women&nbsp;also&nbsp;lose&nbsp;their&nbsp;fertility<\/strong> and it may take several years before all can be successfully resolved and return to normal. <span style=\"color: #ff6600\">[12-14]<\/span><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Before you throw yourself headlong into losing weight on a salad diet and exercising twice a day, think about what it will cost you and how <strong>you imagine your life in a few years<\/strong>. You may want children, and because of your desire for a perfect look, their entry into your life can take considerably longer. <span style=\"color: #ff6600\">[12\u201314]<\/span><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>But beware, low energy intake can also have a <strong>negative effect on<\/strong> <strong>the reproductive function of men<\/strong>. Therefore, it is not a good idea to stick to some form of diet when trying for offspring. <span style=\"color: #ff6600\">[15] <\/span><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Are you interested in the subject of the Female Athlete Triad? Read our detailed article on this topic in the article <span style=\"color: #ff6600\"><strong><a href=\"https:\/\/gymbeam.com\/blog\/how-to-combat-the-absence-of-menstruation-and-other-symptoms-of-the-female-athlete-triad\/\" target=\"_blank\" aria-label=\"How To Fight the Absence of Menstruation and Other Symptoms of the Female Athlete Triad? (opens in a new tab)\" rel=\"noreferrer noopener\" class=\"ek-link\">How To Fight the Absence of Menstruation and Other Symptoms of the Female Athlete Triad?<\/a>&nbsp;<\/strong><\/span><\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading is-style-default\"><span class=\"ez-toc-section\" id=\"3_Mood_swings_fatigue_and_poor_sleep\"><\/span>3. Mood swings, fatigue and poor sleep<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>You may even find yourself in a <strong>worse mood<\/strong> when you are in a&nbsp;<strong>large calorie deficit<\/strong> or your<strong> last meal was hours ago, and you are hungry<\/strong>. One study found that 62% of adolescents who were classified as &#8220;extreme dieters&#8221; experienced high levels of anxiety and depression. However, this may also be associated with an overall negative self-perception, which is why people generally resort to diets. Also, <strong>low energy intake affects dopamine and<\/strong> <strong>serotonin<\/strong>, which are hormones that affect your mood. <span style=\"color: #ff6600\">[16-19]&nbsp;<\/span><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Perhaps it is not surprising that without sufficient energy intake you can <strong>feel much more tired<\/strong> and the body can somehow motivate you to move as little as possible and conserve energy.&nbsp; Ordinary stair running or previously normal activity may thus seem like the ultimate sporting achievement.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Have you ever woken up at night with a &#8220;tummy tingling&#8221; and were hungry? Or did these body signals keep you from falling asleep? It is nothing unusual, it is a frequent manifestation and a <strong>negative effect of low energy intake on the quality of sleep<\/strong>. Thus, you can encounter problems with <strong>falling asleep, frequent<\/strong> <strong>awaking during the night and low sleep quality<\/strong>, which in turn can manifest itself in impaired mood and negatively affect cognitive performance. <span style=\"color:#ff6600\" class=\"tadv-color\">[20]<\/span><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>If you want to learn more about sleep, read our article<span style=\"color: #ff6600\"><strong> <a href=\"https:\/\/gymbeam.com\/blog\/how-to-improve-sleep-and-how-it-affects-health-and-muscle-growth\/\" target=\"_blank\" aria-label=\"How to Improve Sleep and How it Affects the Health and Growth of Muscle Mass? (opens in a new tab)\" rel=\"noreferrer noopener\" class=\"ek-link\">How to Improve Sleep and How it Affects the Health and Growth of Muscle Mass?<\/a><\/strong><\/span><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n    <link href=\"https:\/\/gymbeam.com\/blog\/wp-content\/themes\/wp-gymbeam-blog-theme\/css\/vue\/index.css\" rel=\"preload\" as=\"style\">\n    <link href=\"https:\/\/gymbeam.com\/blog\/wp-content\/themes\/wp-gymbeam-blog-theme\/js\/vue\/chunk-vendors.js\" rel=\"preload\" as=\"script\">\n    <link href=\"https:\/\/gymbeam.com\/blog\/wp-content\/themes\/wp-gymbeam-blog-theme\/js\/vue\/index.js\" rel=\"preload\" as=\"script\">\n    <link data-no-optimize=\"1\" href=\"https:\/\/gymbeam.com\/blog\/wp-content\/themes\/wp-gymbeam-blog-theme\/css\/vue\/index.css\" rel=\"stylesheet\">\n\n    <h2>\n        You might be interested in these products:    <\/h2>\n\n    <div data-app=\"recommended\" data-products=\"28324,30248,9061,51652,49360,34501,37054,48406,5951,28384,31256,6322,5968,6322,34207,29089,30342,29715,41077,36253\" ><\/div>\n\n    <script data-no-optimize=\"1\" src=\"https:\/\/gymbeam.com\/blog\/wp-content\/themes\/wp-gymbeam-blog-theme\/js\/vue\/chunk-vendors.js\"><\/script>\n    <script data-no-optimize=\"1\" src=\"https:\/\/gymbeam.com\/blog\/wp-content\/themes\/wp-gymbeam-blog-theme\/js\/vue\/index.js\"><\/script>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading is-style-default\"><span class=\"ez-toc-section\" id=\"4_Hunger_cravings_constant_thoughts_of_food_and_overeating\"><\/span>4. Hunger, cravings, constant thoughts of food and overeating<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"749\" height=\"1124\" src=\"https:\/\/gymbeam.cz\/blog\/wp-content\/uploads\/2021\/04\/IMG_5315___-749x1124.jpg\" alt=\"Why do you always think about food when dieting?\" class=\"wp-image-237879\" title=\"Why do you always think about food when dieting?\" srcset=\"https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/IMG_5315___-749x1124.jpg 749w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/IMG_5315___-267x400.jpg 267w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/IMG_5315___-1024x1536.jpg 1024w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/IMG_5315___-1365x2048.jpg 1365w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/IMG_5315___.jpg 1400w\" sizes=\"auto, (max-width: 749px) 100vw, 749px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p>Have&nbsp;you&nbsp;ever&nbsp;been&nbsp;in&nbsp;the&nbsp;<strong>vicious circle of dieting and&nbsp;overeating<\/strong> intending to try again as of Monday? The fact that you are not alone can calm you down.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Why does the body start to complain more and more loudly about food during dieting? Low energy intake negatively affects a number of the hormones responsible.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"is-style-default wp-block-list\">\n<li><strong>stress hormone Cortisol<\/strong><\/li>\n\n\n\n<li><strong>hunger and satiety hormones (Leptin &amp; Ghrelin)<\/strong><\/li>\n<\/ul>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>The greater the <strong>dietary restrictions,<\/strong> the more strongly you can observe <strong>compulsive cravings, especially for high-calorie foods<\/strong>. <span style=\"color: #ff6600\">[21\u201322]<\/span><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>This can then lead to the aforementioned cycle of drastic dieting during the week and weekend overeating, which is not something you should stand for.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>From perhaps the most famous experiment on starvation, aptly titled the<em> Minnesota Starvation Experiment<\/em> led by Dr. Ancel Keys at the turn of 1944 -1945, we can take a few things.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>His work shows, for example, that with a <strong>reduction in energy<\/strong> <strong>intake, on the contrary, thoughts of eating during the day increase<\/strong>, which quite simply can literally become the centre of our existence. Again, that&#8217;s not something you should want. <span style=\"color: #ff6600\">[23]<\/span><\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading is-style-default\"><span class=\"ez-toc-section\" id=\"5_Problems_with_hair_nails_and_skin\"><\/span>5. Problems with hair, nails and skin<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>It is interesting that, as people, we are often willing to <strong>risk deteriorating the health of our skin, nails and hair<\/strong>, which also interfere in a huge way with our visual identity, in order to achieve our dream appearance. Hair in small amounts falls out naturally for all of us, that&#8217;s normal. However, if you detect increased amounts of hair on your brush, it may be a signal that you have little energy, protein and specific micronutrients in your diet. In relation to the health of hair, nails and skin we can talk about insufficient intake of <span style=\"color: #ff6600\"><a href=\"https:\/\/gymbeam.com\/zinc-chelate-bisglycinate-gymbeam.html\" target=\"_blank\" aria-label=\" (opens in a new tab)\" rel=\"noreferrer noopener\" class=\"ek-link\">zinc<\/a><\/span>, biotin, copper, <span style=\"color: #ff6600\"><a aria-label=\"selenium (opens in a new tab)\" href=\"https:\/\/gymbeam.com\/selenium-gymbeam.html\" target=\"_blank\" rel=\"noreferrer noopener\" class=\"ek-link\">selenium<\/a><\/span>, iodine, vitamin A, <span style=\"color: #ff6600\"><a aria-label=\"C (opens in a new tab)\" href=\"https:\/\/gymbeam.com\/liposomal-vitamin-c-gymbeam.html\" target=\"_blank\" rel=\"noreferrer noopener\" class=\"ek-link\">C<\/a>, <a aria-label=\"D (opens in a new tab)\" href=\"https:\/\/gymbeam.com\/vitamin-d3-1000-iu-gymbeam.html\" target=\"_blank\" rel=\"noreferrer noopener\" class=\"ek-link\">D<\/a>, <a aria-label=\"E (opens in a new tab)\" href=\"https:\/\/gymbeam.com\/vitamin-60-e-kaps-gymbeam.html\" target=\"_blank\" rel=\"noreferrer noopener\" class=\"ek-link\">E<\/a><\/span> or <span style=\"color: #ff6600\"><a aria-label=\"B vitamins (opens in a new tab)\" href=\"https:\/\/gymbeam.com\/vitamin-b-complex-forte-gymbeam.html\" target=\"_blank\" rel=\"noreferrer noopener\" class=\"ek-link\">B vitamins<\/a><\/span>. Sufficient intake of <span style=\"color: #ff6600\"><a href=\"https:\/\/gymbeam.com\/protein-just-whey-gymbeam.html\" target=\"_blank\" aria-label=\" (opens in a new tab)\" rel=\"noreferrer noopener\" class=\"ek-link\">protein<\/a><\/span> and <span style=\"color: #ff6600\"><a aria-label=\"collagen (opens in a new tab)\" href=\"https:\/\/gymbeam.com\/hydrolyzed-collagen-runcollg-gymbeam.html\" target=\"_blank\" rel=\"noreferrer noopener\" class=\"ek-link\">collagen<\/a><\/span> is particularly important for the health of the skin and affects its general appearance and health. <span style=\"color: #ff6600\">[24-27]<\/span><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>In the case you want to learn more about collagen and its effect on skin and joint health, read our article <strong><span style=\"color: #ff6600\"><a href=\"https:\/\/gymbeam.com\/blog\/how-to-choose-the-best-collagen-for-healthy-skin-and-joints\/\" target=\"_blank\" aria-label=\"How To Choose the Best Collagen for Healthy Skin and Joints? (opens in a new tab)\" rel=\"noreferrer noopener\" class=\"ek-link\">How To Choose the Best Collagen for Healthy Skin and Joints?<\/a><\/span><\/strong><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1124\" height=\"750\" src=\"https:\/\/gymbeam.cz\/blog\/wp-content\/uploads\/2021\/04\/vlasy-_-1124x750.jpg\" alt=\"What happens if you don't eat enough? Hair loss, deterioration in skin and nail health.\" class=\"wp-image-237713\" style=\"width:843px;height:563px\" title=\"What happens if you don't eat enough? Hair loss, deterioration in skin and nail health.\" srcset=\"https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/vlasy-_-1124x750.jpg 1124w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/vlasy-_-400x267.jpg 400w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/vlasy-_-1536x1025.jpg 1536w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/vlasy-_.jpg 2000w\" sizes=\"auto, (max-width: 1124px) 100vw, 1124px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading is-style-default\"><span class=\"ez-toc-section\" id=\"6_Constant_feeling_of_being_cold\"><\/span>6. Constant feeling of being cold<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Are you cold even in summer, when the temperature in the&nbsp;shade is barely below 30&nbsp;\u00b0C? Your&nbsp;<strong>body naturally generates heat, which<\/strong>&nbsp;<strong>is&nbsp;generated&nbsp;by&nbsp;burning&nbsp;nutrients&nbsp;for&nbsp;energy<\/strong>. The reduction in energy intake goes hand in hand with a <strong>reduction in thyroid hormones<\/strong>, which directly regulate the rate of metabolism and heat production. In one study involving obese women, the level of thyroid hormone (triiodthyronine (T3)) decreased by <strong>66%<\/strong> compared to baseline with a very low -energy diet (400 kcal\/day). Again, there is a direct correlation, the more energy you take away, the colder you will get. <span style=\"color: #ff6600\">[28-29]<\/span><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1124\" height=\"749\" src=\"https:\/\/gymbeam.cz\/blog\/wp-content\/uploads\/2021\/04\/adrian-swancar-imAfCYq7KH0-unsplash-_-OK-1124x749.jpg\" alt=\"Why are you cold when your energy intake is inadequate?\" class=\"wp-image-237729\" style=\"width:843px;height:562px\" title=\"Why are you cold when your energy intake is inadequate?\" srcset=\"https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/adrian-swancar-imAfCYq7KH0-unsplash-_-OK-1124x749.jpg 1124w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/adrian-swancar-imAfCYq7KH0-unsplash-_-OK-400x267.jpg 400w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/adrian-swancar-imAfCYq7KH0-unsplash-_-OK-1536x1024.jpg 1536w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/adrian-swancar-imAfCYq7KH0-unsplash-_-OK-2048x1365.jpg 2048w\" sizes=\"auto, (max-width: 1124px) 100vw, 1124px\" \/><\/figure>\n<\/div>\n\n\n<p>Hardening has a positive effect not only on the circulation of blood, which in theory, in the context of improving adaptation to cold, can help keep away feelings of cold. Learn more in the article <span style=\"color: #ff6600\"><strong><a href=\"https:\/\/gymbeam.com\/blog\/how-to-get-stronger-immunity-thanks-to-cold-water-therapy\/\" target=\"_blank\" aria-label=\"How to Get Stronger Immunity Thanks to Cold Water Therapy? (opens in a new tab)\" rel=\"noreferrer noopener\" class=\"ek-link\">How to Get Stronger Immunity Thanks to Cold Water Therapy?<\/a><\/strong><\/span><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading is-style-default\"><span class=\"ez-toc-section\" id=\"7_Weakened_immunity_digestive_and_cardiovascular_problems\"><\/span>7. Weakened immunity, digestive and cardiovascular problems <span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"749\" height=\"1124\" src=\"https:\/\/gymbeam.cz\/blog\/wp-content\/uploads\/2021\/04\/IMG_1789_-OK-749x1124.jpg\" alt=\"What effect does low food intake have on immunity?\" class=\"wp-image-237771\" title=\"What effect does low food intake have on immunity?\" srcset=\"https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/IMG_1789_-OK-749x1124.jpg 749w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/IMG_1789_-OK-267x400.jpg 267w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/IMG_1789_-OK-1024x1536.jpg 1024w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/IMG_1789_-OK-1366x2048.jpg 1366w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/IMG_1789_-OK.jpg 1667w\" sizes=\"auto, (max-width: 749px) 100vw, 749px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p><strong>With low energy intake, the body saves energy wherever it can, and the immune system is no exception<\/strong>. Insufficient intake of specific micronutrients and basic building blocks for some cells of the immune system in the form of <a href=\"https:\/\/gymbeam.com\/blog\/20-foods-with-which-you-can-easily-add-protein-to-your-diet\/\" target=\"_blank\" aria-label=\"proteins (opens in a new tab)\" rel=\"noreferrer noopener\" class=\"ek-link\">proteins<\/a> can lead to more frequent diseases that you would otherwise be capable of defending. <span style=\"color: #ff6600\">[1\u20132]<\/span><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>These&nbsp;micronutrients&nbsp;include,&nbsp;for&nbsp;example,&nbsp;zinc,&nbsp;selenium,<span style=\"color: #ff6600\">&nbsp;<a href=\"https:\/\/gymbeam.com\/iron-120-caps-gymbeam.html\" target=\"_blank\" aria-label=\"iron (opens in a new tab)\" rel=\"noreferrer noopener\" class=\"ek-link\">iron<\/a><\/span>,&nbsp;vitamin&nbsp;A,&nbsp;C,&nbsp;D&nbsp;or&nbsp;certain&nbsp;B&nbsp;vitamins.&nbsp;<span style=\"color: #ff6600\">[1-2]<\/span><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Other&nbsp;signs&nbsp;of&nbsp;insufficient&nbsp;energy&nbsp;intake&nbsp;include<strong>&nbsp;constipation<\/strong>.&nbsp;This is probably due to a generally smaller diet, but it is possible that insufficient energy intake is again to blame, which goes hand in hand with a reduction in metabolic processes due to a decrease in thyroid hormone concentration. In addition, digestive problems described below may occur. <span style=\"color: #ff6600\">[1-2] [30]&nbsp;<\/span><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>increased flatulence<\/strong><\/li>\n\n\n\n<li><strong>slowed gastric emptying<\/strong><\/li>\n\n\n\n<li><strong>decrease&nbsp;in&nbsp;intestinal&nbsp;peristalsis<\/strong><\/li>\n<\/ul>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>Cardiovascular problems<\/strong> such as blood pressure fluctuations, heart rate and changes in blood lipids may even occur due to insufficient energy intake. <span style=\"color: #ff6600\">[1-2]<\/span><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>In the case you want to learn how to effectively strengthen the immune system, read our article <a href=\"https:\/\/gymbeam.com\/blog\/15-ways-to-strengthen-your-immune-system-and-protect-health\/\" target=\"_blank\" aria-label=\"15 Ways To Strengthen the Immune System and Protect Your Health. (opens in a new tab)\" rel=\"noreferrer noopener\" class=\"ek-link\"><strong>1<\/strong><span style=\"color: #ff6600\"><strong>5 Ways To Strengthen the Immune System and Protect Your Health.<\/strong><\/span><\/a><\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading is-style-default\"><span class=\"ez-toc-section\" id=\"8_You_may_face_a_shortage_of_essential_micronutrients\"><\/span>8. You may face a shortage of essential micronutrients<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Food is not only a source of energy<\/strong>, but also valuable micronutrients, which you need to receive regularly in the diet, so that everything runs as it should. By reducing energy intake, the amount of food from which you receive micronutrients will also decrease. <strong>In the case of alternative nutritional directions, this<\/strong> <strong>problem may increase even more<\/strong>. It can easily happen that you begin to receive, for example, insufficient amounts of <span style=\"color: #ff6600\"><a aria-label=\"vitamin B12 (opens in a new tab)\" href=\"https:\/\/gymbeam.com\/vitamin-b12-gymbeam.html\" target=\"_blank\" rel=\"noreferrer noopener\" class=\"ek-link\">vitamin B12<\/a>, <a aria-label=\"folic acid (opens in a new tab)\" href=\"https:\/\/gymbeam.com\/folic-acid-gymbeam.html\" target=\"_blank\" rel=\"noreferrer noopener\" class=\"ek-link\">folic acid<\/a>,<\/span> zinc, calcium, <span style=\"color: #ff6600\"><a aria-label=\"magnesium (opens in a new tab)\" href=\"https:\/\/gymbeam.com\/chelated-magnesium-gymbeam.html\" target=\"_blank\" rel=\"noreferrer noopener\" class=\"ek-link\">magnesium<\/a><\/span> or iron. <strong>Insufficient iron intake<\/strong> in the long term can lead to <strong>anaemia<\/strong>, especially in women. This can cause <strong>unexplained fatigue<\/strong>. An appropriate strategy to &#8220;insure&#8221; the intake of basic micronutrients is the inclusion of <span style=\"color: #ff6600\"><a aria-label=\"supplementation with high-quality multivitamins (opens in a new tab)\" href=\"https:\/\/gymbeam.com\/multivitamin-vitality-complex-60-tab-gymbeam.html\" target=\"_blank\" rel=\"noreferrer noopener\" class=\"ek-link\">supplementation with high-quality multivitamins<\/a>. [31\u201332]<\/span><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1124\" height=\"749\" src=\"https:\/\/gymbeam.cz\/blog\/wp-content\/uploads\/2021\/04\/6___-1124x749.jpg\" alt=\"Is it possible to make up for mineral and vitamin deficiencies when dieting?\" class=\"wp-image-237798\" style=\"width:843px;height:562px\" title=\"Is it possible to make up for mineral and vitamin deficiencies when dieting?\" srcset=\"https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/6___-1124x749.jpg 1124w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/6___-400x267.jpg 400w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/6___-1536x1024.jpg 1536w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/6___-2048x1365.jpg 2048w\" sizes=\"auto, (max-width: 1124px) 100vw, 1124px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading is-style-default\"><span class=\"ez-toc-section\" id=\"9_Deterioration_of_hormonal_profile_and_decreased_sex_drive\"><\/span>9. Deterioration of hormonal profile and decreased sex drive<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>The body reacts dynamically to nutrient intake<\/strong> and does everything to survive, which is its primary task. The lack of energy intake leads to a whole <strong>cascade of negative hormonal<\/strong> <strong>changes<\/strong>. Hormones have a complex effect on the body through actions in target tissues. For example, the constellation of <strong>increased levels of leptin and decreased levels of ghrelin<\/strong> means that you will <strong>feel less saturated after a meal and have greater cravings for high-calorie meals<\/strong>. And when you add long-term elevated levels of cortisol, which itself has a number of negative effects on the body, the problem is even greater. Lower concentrations of sex hormones also result, for example, in <strong>negative effects on the psyche, libido (sex drive),<\/strong> <strong>regeneration or bone health, and loss of menstruation in women.<\/strong> <span style=\"color: #ff6600\">[1-2]&nbsp;<\/span><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u2191<\/strong> Cortisol and Leptin<\/li>\n\n\n\n<li><strong>\u2193 <\/strong>Testosterone, IGF 1, Oestrogen, Thyroid hormones, Ghrelin, Peptide YY<\/li>\n<\/ul>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>In the case that you are interested in the effect of testosterone and progesterone on weight loss, read our article <span style=\"color: #ff6600\"><strong><a href=\"https:\/\/gymbeam.com\/blog\/how-do-testosterone-and-progesterone-affect-weight-loss-and-muscle-growth\/\" target=\"_blank\" aria-label=\" (opens in a new tab)\" rel=\"noreferrer noopener\" class=\"ek-link\">How Do Testosterone and Progesterone Affect Weight Loss and Muscle Mass Growth?<\/a><\/strong><\/span><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1124\" height=\"750\" src=\"https:\/\/gymbeam.cz\/blog\/wp-content\/uploads\/2021\/04\/iStock-1193250035-_-OK-1124x750.jpg\" alt=\"Diet, low energy intake and reduced sex drive\" class=\"wp-image-237743\" style=\"width:843px;height:563px\" title=\"Diet, low energy intake and reduced sex drive\" srcset=\"https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/iStock-1193250035-_-OK-1124x750.jpg 1124w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/iStock-1193250035-_-OK-400x267.jpg 400w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/iStock-1193250035-_-OK-1536x1024.jpg 1536w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/iStock-1193250035-_-OK-2048x1366.jpg 2048w\" sizes=\"auto, (max-width: 1124px) 100vw, 1124px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading is-style-default\"><span class=\"ez-toc-section\" id=\"10_Impaired_sports_performance_and_regeneration\"><\/span>10. Impaired sports performance and regeneration<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>If we add to all the effects of low energy intake the <strong>pursuit of top<\/strong> <strong>sporting performance<\/strong>, which may not be the only prerogative of professional athletes, one can expect to <strong>stick only<\/strong> <strong>to this level of effort<\/strong>. We will discuss in more detail the negatively affected aspects of sports performance according to summary work of the International Olympic Committee below. <span style=\"color: #ff6600\">[1\u20132]<\/span><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading is-style-default\">How does low energy intake affect sports performance?<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Decreased strength and endurance performance.<\/strong> When your phone is 30% charged, and you want performance that requires 100% battery capacity, it can&#8217;t cope. Unlike us, the phone shuts down when there is no power. Once you have already exhausted limited glycogen reserves during sports activity and only utilize &#8220;fats&#8221; from adipose tissue, you will have a drop in almost any performance.<\/li>\n\n\n\n<li><strong>Decreased&nbsp;glycogen&nbsp;stores.<\/strong> Due to the limited energy supply from your diet, especially from carbohydrates, there is a risk of a reduction in the supply of ready energy in the form of glycogen for energy coverage of intense sports performances.<\/li>\n\n\n\n<li><strong>Increased&nbsp;risk&nbsp;of&nbsp;injury.<\/strong> In sport, there is a greater risk of&nbsp;musculoskeletal damage in the form of muscle injuries or fatigue&nbsp;fractures.<\/li>\n\n\n\n<li><strong>Delayed reaction time.<\/strong> A slower response to game situations in team sports or a slower start in an athletic race is not exactly an advantage.<\/li>\n\n\n\n<li><strong>Reduced coordination capability.<\/strong> Proper coordination is important for performing movements in complex and often unexpected situations that arise from the nature of sport. Coordination skills depend on the activity of the central nervous system to effectively transmit information to the muscles to perform movement.<\/li>\n\n\n\n<li><strong>Poor concentration.<\/strong> The ability to concentrate is key to the correct evaluation of stimuli coming from the external environment. In connection with the reduction of reaction time, this is already a fairly significant negative impact on sports performance.<\/li>\n\n\n\n<li><strong>Impaired&nbsp;ability&nbsp;to&nbsp;build&nbsp;muscle&nbsp;to&nbsp;loss&nbsp;of&nbsp;muscle&nbsp;mass.<\/strong>&nbsp; Sufficient energy intake is required for muscle growth, along with optimal protein intake and a suitable hormonal environment. Even with reduced testosterone levels and increased cortisol concentrations, the optimal hormonal environment is impaired. Particularly in combination with excessive training volume, loss of muscle mass can occur, which according to current literature occurs mainly in long-term low energy availability, which is less than <strong>25 kcal\/kg\/FFM<\/strong>. Here we can also see a significant negative effect on cardiovascular health and mental health problems.<span style=\"color: #ff6600\"> [33]&nbsp;<\/span><\/li>\n\n\n\n<li><strong>Impaired regeneration.<\/strong> Unsurprisingly, due to a lack of energy and an unfavourable hormonal environment, regeneration is affected, which is therefore prolonged.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1124\" height=\"751\" src=\"https:\/\/gymbeam.cz\/blog\/wp-content\/uploads\/2021\/04\/DSC02002-_-OK-1124x751.jpg\" alt=\"Low energy intake reduces sports performance and muscle growth\" class=\"wp-image-237848\" style=\"width:843px;height:563px\" title=\"Low energy intake reduces sports performance and muscle growth\" srcset=\"https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/DSC02002-_-OK-1124x751.jpg 1124w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/DSC02002-_-OK-400x267.jpg 400w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/DSC02002-_-OK-1536x1026.jpg 1536w, https:\/\/gymbeam.com\/blog\/wp-content\/uploads\/2021\/04\/DSC02002-_-OK-2048x1368.jpg 2048w\" sizes=\"auto, (max-width: 1124px) 100vw, 1124px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading is-style-default\"><span class=\"ez-toc-section\" id=\"A_perfect_weight_or_perfect_body_does_not_exist_we_are_all_original\"><\/span>A perfect weight or perfect body does not exist, we are all original<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Do you still think it&#8217;s worth chasing the perfect figure through&nbsp;diet and frenzied exercise regime? <strong>Perfection means something<\/strong> <strong>different for everybody<\/strong>. We&#8217;re all different somehow because we have different height, skeletal structure, leg length, arms or torsos. A much better way is to respect yourself, treat your body with respect and<strong> try to become the<\/strong> <strong>best version of yourself<\/strong> and move at least one millimetre towards your goal every day.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>It is ridiculous to run after the smallest number on the scale because weight does not tell the whole truth. If you want to know why, read our article <strong><span style=\"color: #ff6600\"><a href=\"https:\/\/gymbeam.com\/blog\/why-the-scale-shows-you-a-higher-number-and-its-not-fat\/\" target=\"_blank\" aria-label=\"Why Weight Shows You a Higher Number and It's Not All Fat? (opens in a new tab)\" rel=\"noreferrer noopener\" class=\"ek-link\">Why Weight Shows You a Higher Number and It&#8217;s Not All Fat?<\/a><\/span><\/strong><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>A much better strategy to help you be more satisfied with yourself is to <strong>learn healthier habits<\/strong>. This way you can improve and adjust your routine based on our goals. If you are more interested in this topic, read our article <strong><span style=\"color: #ff6600\"><a aria-label=\"How and When to Eat Properly to Lose Weight Without Dieting? (opens in a new tab)\" href=\"https:\/\/gymbeam.com\/blog\/how-and-when-to-eat-healthy-to-lose-weight-without-dieting\/\" target=\"_blank\" rel=\"noreferrer noopener\" class=\"ek-link\">How and When to Eat Properly to Lose Weight Without Dieting?<\/a><\/span><\/strong><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading is-style-default\"><span class=\"ez-toc-section\" id=\"What_should_you_remember\"><\/span>What should you remember?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>If you want to shorten your journey to a dream figure by eating <strong>salad with salad three times a day<\/strong> and devoting a <strong>few hours<\/strong> <strong>each day to sport<\/strong>, paradoxically, you <strong>prolong the process<\/strong> and create a number of <strong>health problems<\/strong>. You can thus encounter the phenomenon of a &#8220;slow metabolism&#8221;, mood swings, fatigue, constant hunger, weakened immunity and impaired sports performance.&nbsp; In the long term, there may be an increased risk of <strong>fatigue fractures in particular and menstrual problems in women.&nbsp;<\/strong><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Isn&#8217;t it much better to <strong>eat more, play sport regularly and give the whole process enough time?<\/strong> You will have to wait for the results, but they will be sustainable in the long term and, above all, you will not face the phenomenon of low energy availability and any resulting health problems.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Have you ever encountered a health problem due to insufficient energy intake? Share your experience, advice and tips for successful weight loss with us in the comments. If you liked the article, promote it by sharing it so that your friends will know that eating a few vegetable pieces a day is not the way to lose weight.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><a href=\"https:\/\/gymbeam.com\/protein\" target=\"_blank\" class=\"category-button\">\n\t<span class=\"label\">\n\t\tProtein\t<\/span>\n\t<svg class=\"icon-cart\" focusable=\"false\">\n\t\t<use xlink:href=\"#icon-cart\"><\/use>\n\t<\/svg>\n<\/a><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><a href=\"https:\/\/gymbeam.com\/healthy-food\" target=\"_blank\" class=\"category-button\">\n\t<span class=\"label\">\n\t\tHealthy food\t<\/span>\n\t<svg class=\"icon-cart\" focusable=\"false\">\n\t\t<use xlink:href=\"#icon-cart\"><\/use>\n\t<\/svg>\n<\/a><\/div>\n<\/div>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Trying to look good or wishing to have a toned body with a minimum of fat is one of the most common reasons why people start eating very little and exercising. Learn about the effects of low energy intake on your body.<\/p>\n","protected":false},"author":65,"featured_media":237573,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_editorskit_title_hidden":false,"_editorskit_reading_time":13,"_editorskit_is_block_options_detached":false,"_editorskit_block_options_position":"{}","footnotes":""},"categories":[97],"tags":[6521,7631,7595,6365],"filter_section":[],"filter_attribute":[],"class_list":{"0":"post-239365","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-fitness-tips","8":"tag-energy","9":"tag-healthy-lifestyle","10":"tag-weight","11":"tag-weight-loss","12":"h-entry","13":"hentry"},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What Happens to Your Body If You Don&#039;t Eat Enough? - GymBeam Blog<\/title>\n<meta name=\"description\" content=\"What happens to your body if you eat too little? 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