{"id":80212,"date":"2023-01-06T15:30:29","date_gmt":"2023-01-06T06:30:29","guid":{"rendered":"https:\/\/www.hiro-clinic.or.jp\/nipt\/pregnancy-weight-management\/"},"modified":"2025-10-16T10:59:36","modified_gmt":"2025-10-16T01:59:36","slug":"pregnancy-weight-management","status":"publish","type":"post","link":"https:\/\/www.hiro-clinic.or.jp\/nipt\/pregnancy-weight-management\/?lang=en","title":{"rendered":"Building Your Body for Pregnancy Planning \u2013 What Is the Ideal Weight?\u3010Supervised by doctor\u3011"},"content":{"rendered":"\n<style>\nh1, p, p.break-normal{\nword-break: normal;\n}\n#article .post_content p {\nword-break: normal;\n}\n<\/style>\n\n\n\n<p>\n  <div style=\"border:solid #ffe6e6 0.8rem;background-color: #fff9f9;padding:3% 5%;margin:1rem 0 3rem;\">\n    <div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u76ee\u6b21<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/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:\/\/www.hiro-clinic.or.jp\/nipt\/pregnancy-weight-management\/?lang=en\/#Summary_of_This_Article\" >Summary of This Article<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/pregnancy-weight-management\/?lang=en\/#Introduction\" >Introduction<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/pregnancy-weight-management\/?lang=en\/#What_is_Pregnancy_Planning\" >What is Pregnancy Planning?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/pregnancy-weight-management\/?lang=en\/#Weight_Management_During_Pregnancy_Planning\" >Weight Management During Pregnancy Planning<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/pregnancy-weight-management\/?lang=en\/#Ideal_BMI_Value\" >Ideal BMI Value<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/pregnancy-weight-management\/?lang=en\/#How_to_Gain_Weight_During_Pregnancy_Planning\" >How to Gain Weight During Pregnancy Planning<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/pregnancy-weight-management\/?lang=en\/#How_to_Lose_Weight_During_Pregnancy_Planning\" >How to Lose Weight During Pregnancy Planning<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/pregnancy-weight-management\/?lang=en\/#Dieting_During_Pregnancy_Planning\" >Dieting During Pregnancy Planning<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/pregnancy-weight-management\/?lang=en\/#Underweight_Obesity_and_Pregnancy_During_Planning\" >Underweight, Obesity, and Pregnancy During Planning<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/pregnancy-weight-management\/?lang=en\/#The_Importance_of_Maintaining_a_Healthy_Weight\" >The Importance of Maintaining a Healthy Weight<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/pregnancy-weight-management\/?lang=en\/#The_Relationship_Between_UnderweightOverweight_and_Infertility\" >The Relationship Between Underweight\/Overweight and Infertility<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/pregnancy-weight-management\/?lang=en\/#Ovulation_Disorders\" >Ovulation Disorders<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/pregnancy-weight-management\/?lang=en\/#Irregular_Menstruation\" >Irregular Menstruation<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/pregnancy-weight-management\/?lang=en\/#Polycystic_Ovary_Syndrome_PCOS\" >Polycystic Ovary Syndrome (PCOS)<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/pregnancy-weight-management\/?lang=en\/#Lifestyle_During_Pregnancy_Planning\" >Lifestyle During Pregnancy Planning<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/pregnancy-weight-management\/?lang=en\/#Diet_for_Weight_Management\" >Diet for Weight Management<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/pregnancy-weight-management\/?lang=en\/#Recommended_Diet_for_Weight_Management_During_Pregnancy_Planning\" >Recommended Diet for Weight Management During Pregnancy Planning<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/pregnancy-weight-management\/?lang=en\/#Recommended_Nutrients_During_Pregnancy_Planning\" >Recommended Nutrients During Pregnancy Planning<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/pregnancy-weight-management\/?lang=en\/#Recommended_Exercises_During_Pregnancy_Planning\" >Recommended Exercises During Pregnancy Planning<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/pregnancy-weight-management\/?lang=en\/#NIPT_Non-Invasive_Prenatal_Testing_After_Pregnancy_is_Confirmed\" >NIPT (Non-Invasive Prenatal Testing) After Pregnancy is Confirmed<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/pregnancy-weight-management\/?lang=en\/#Conclusion\" >Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n<h2 style=\"margin-top:1rem;\"><span class=\"ez-toc-section\" id=\"Summary_of_This_Article\"><\/span>Summary of This Article<span class=\"ez-toc-section-end\"><\/span><\/h2>\n    <p>For weight management during pregnancy planning, it is essential to know the optimal BMI for pregnancy. According to the World Health Organization standards, a BMI value of 18.5 or below is considered underweight, 18.5 to less than 25 is normal weight, 25 to less than 30 is overweight, and 30 or above is obese. To increase the chances of conception, aim to keep your BMI within the range of 18.5 to 25.0.<\/p>\n  <\/div>\n<\/p>\n\n\n\n\n<div class=\"toc\">\n  <ul>\n    <li><a href=\"#c1\">Introduction<\/a><\/li>\n    <li><a href=\"#c2\">What is Pregnancy Planning?<\/a><\/li>\n    <li><a href=\"#c3\">Weight Management During Pregnancy Planning<\/a>\n      <ul>\n        <li><a href=\"#c3-1\">Ideal BMI Value<\/a><\/li>\n        <li><a href=\"#c3-2\">How to Gain Weight During Pregnancy Planning<\/a><\/li>\n        <li><a href=\"#c3-3\">How to Lose Weight During Pregnancy Planning<\/a>\n          <ul>\n            <li><a href=\"#c3-3-1\">Dieting During Pregnancy Planning<\/a><\/li>\n          <\/ul>\n        <\/li>\n      <\/ul>\n    <\/li>\n    <li><a href=\"#c4\">Underweight, Obesity, and Pregnancy During Planning<\/a>\n      <ul>\n        <li><a href=\"#c4-1\">The Importance of Maintaining a Healthy Weight<\/a><\/li>\n        <li><a href=\"#c4-2\">The Relationship Between Underweight\/Overweight and Infertility<\/a>\n          <ul>\n            <li><a href=\"#c4-2-1\">Ovulation Disorders<\/a><\/li>\n            <li><a href=\"#c4-2-2\">Irregular Menstruation<\/a><\/li>\n            <li><a href=\"#c4-2-3\">Polycystic Ovary Syndrome (PCOS)<\/a><\/li>\n          <\/ul>\n        <\/li>\n      <\/ul>\n    <\/li>\n    <li><a href=\"#c5\">Lifestyle During Pregnancy Planning<\/a>\n      <ul>\n        <li><a href=\"#c5-1\">Diet for Weight Management<\/a>\n          <ul>\n            <li><a href=\"#c5-1-1\">Recommended Diet for Weight Management During Pregnancy Planning<\/a><\/li>\n            <li><a href=\"#c5-1-2\">Recommended Nutrients During Pregnancy Planning<\/a><\/li>\n          <\/ul>\n        <\/li>\n        <li><a href=\"#c5-2\">Recommended Exercises During Pregnancy Planning<\/a><\/li>\n      <\/ul>\n    <\/li>\n    <li><a href=\"#c6\">NIPT (Non-Invasive Prenatal Testing) After Pregnancy is Confirmed<\/a><\/li>\n    <li><a href=\"#c7\">Conclusion<\/a><\/li>\n  <\/ul>\n  <button class=\"toc_more\">Open Table of Contents<\/button>\n<\/div>\n\n\n<p style=\"width:100%;max-width:300px;margin:0 auto;\"><a href=\"\/nipt\/\" class=\"content-bnr about\"><img decoding=\"async\" src=\"\/nipt\/wp-content\/themes\/hiro_nipt\/img\/banner\/nipt04pc.png\" alt=\"\u80ce\u5150\u306e\u6027\u5225\u306f10\u9031\u76ee\u3067\u308f\u304b\u308b\"><\/a> <\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"c1\"><span class=\"ez-toc-section\" id=\"Introduction\"><\/span>Introduction<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Maintaining a weight within the appropriate range is considered conducive to pregnancy, but being outside this range can lead to various complications and make it harder to conceive.<\/p>\n\n\n\n<p>However, just having a weight within the appropriate range does not necessarily guarantee an easier time conceiving. Weight should be seen as one of many indicators of ease of conception.<\/p>\n\n\n\n<p>This article explains the following three points:<\/p>\n\n\n\n<ul class=\"well wp-block-list\">\n<li>The ideal BMI for pregnancy<\/li>\n\n\n\n<li>Lifestyle habits that facilitate conception<\/li>\n\n\n\n<li>Reasons why being outside the appropriate weight range can lead to infertility<\/li>\n<\/ul>\n\n\n\n<p>Set realistic weight goals and aim to build a body that is conducive to pregnancy.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"c2\"><span class=\"ez-toc-section\" id=\"What_is_Pregnancy_Planning\"><\/span>What is Pregnancy Planning?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Pregnancy planning, abbreviated as &#8220;Ninkatsu&#8221; in Japanese, refers to activities aimed at achieving pregnancy. This includes actions such as:<\/p>\n\n\n\n<ul class=\"well wp-block-list\">\n<li>Predicting ovulation days<\/li>\n\n\n\n<li>Having sexual intercourse on ovulation days<\/li>\n\n\n\n<li>Discussing pregnancy plans with your partner<\/li>\n\n\n\n<li>Gathering information about pregnancy<\/li>\n\n\n\n<li>Visiting infertility clinics<\/li>\n\n\n\n<li>Deciding on the age to conceive based on life plans<\/li>\n<\/ul>\n\n\n\n<p>In other words, any actions taken by couples wishing to conceive can be referred to as &#8220;Ninkatsu.&#8221;<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"600\" height=\"400\" src=\"\/nipt\/wp-content\/uploads\/2023\/01\/pregnancy-weight-management01.jpg\" alt=\"\u598a\u6d3b\u3068\u306f\" class=\"wp-image-49325\"\/><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading\" id=\"c3\"><span class=\"ez-toc-section\" id=\"Weight_Management_During_Pregnancy_Planning\"><\/span>Weight Management During Pregnancy Planning<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>For weight management during pregnancy planning, it is essential to know the optimal BMI for pregnancy. Compare your BMI with the ideal BMI for pregnancy. Important points will also be explained to help with weight management.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"c3-1\"><span class=\"ez-toc-section\" id=\"Ideal_BMI_Value\"><\/span>Ideal BMI Value<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>BMI (Body Mass Index) is a numerical representation of body composition, calculated by dividing your weight in kilograms by your height in meters squared (weight kg \u00f7 (height m \u00d7 height m)). You can easily calculate it on the following website, so please feel free to use it.<\/p>\n\n\n\n<p>Reference: CASIO keisan &#8211; <a rel=\"noreferrer noopener\" href=\"https:\/\/keisan.casio.jp\/exec\/system\/1161228732\" data-type=\"URL\" data-id=\"https:\/\/keisan.casio.jp\/exec\/system\/1161228732\" target=\"_blank\">BMI and Appropriate Weight<\/a><\/p>\n\n\n\n<p>For example, if you are 160 cm tall and weigh 55 kg, your BMI would be calculated as 55 \u00f7 (1.6 \u00d7 1.6) = 21.48.<\/p>\n\n\n\n<p>According to the World Health Organization (WHO) standards, a BMI of 18.5 or below is considered underweight, 18.5 to less than 25 is normal weight, 25 to less than 30 is overweight, and 30 or above is obese.<\/p>\n\n\n\n<p>To increase the chances of conception, aim to keep your BMI within the range of 18.5 to 25. Within the appropriate range, a BMI of 19 to 22.9 is associated with the highest pregnancy rates.<\/p>\n\n\n\n<p>It is not good for your BMI to be too high or too low. For a body that is conducive to pregnancy, try to maintain your BMI within the appropriate range as much as possible.<\/p>\n\n\n\n    <a href=\"\/nipt\/pre-pregnancy-dietary-effects\/\" class=\"blog-card\">\n      <div class=\"blog-card-content\">\n          <div class=\"blog-card-title\">\u598a\u6d3b\u4e2d\u306e\u98df\u3079\u7269\u3084\u98f2\u307f\u7269\u306f\u598a\u5a20\u306b\u5f71\u97ff\u3059\u308b\uff1f\u3044\u3044\u98df\u3079\u7269\u306f\uff1f\u3010\u533b\u5e2b\u76e3\u4fee\u3011 <\/div>\n          <div class=\"blog-card-excerpt\">\u598a\u6d3b\u4e2d\u306f\u8d64\u3061\u3083\u3093\u306e\u5065\u5168\u306a\u767a\u80b2\u306e\u305f\u3081\u306b\u3001\u98df\u3079\u7269\u306b\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002\u4eca\u3059\u3050\u5f79\u306b\u7acb\u3064\u598a\u6d3b\u4e2d\u306e\u304a\u3059\u3059\u3081\u98df\u54c1\u3068\u907f\u3051\u308b\u3079\u304d\u98df\u54c1\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002...<\/div>\n      <\/div>\n    <\/a>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"c3-2\"><span class=\"ez-toc-section\" id=\"How_to_Gain_Weight_During_Pregnancy_Planning\"><\/span>How to Gain Weight During Pregnancy Planning<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"well wp-block-list\">\n<li>Muscle Training<\/li>\n\n\n\n<li>Eating Small, Frequent Meals<\/li>\n\n\n\n<li>Eating Easily Digestible Foods<\/li>\n\n\n\n<li>Supplementing Calories with Quality Fats<\/li>\n<\/ul>\n\n\n\n<p>The reason for muscle training is that it positively impacts pregnancy planning. Increasing muscle mass raises body temperature and blood flow, which in turn activates the body&#8217;s functions.<\/p>\n\n\n\n<p>If you need to gain weight, you might not be able to eat large amounts at once. In that case, increase the frequency of your meals to supplement your calorie intake.<\/p>\n\n\n\n<p>For those who have trouble eating a lot, weak digestive function might be the issue. Cutting food into small pieces or making soups can aid digestion and make nutrient absorption easier, which is recommended.<\/p>\n\n\n\n<p>Additionally, compared to carbohydrates and proteins, fats have more than twice the calories per gram. Consuming quality fats can help make up for a calorie deficit.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"c3-3\"><span class=\"ez-toc-section\" id=\"How_to_Lose_Weight_During_Pregnancy_Planning\"><\/span>How to Lose Weight During Pregnancy Planning<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Aim to keep your BMI within the appropriate range. Being underweight can make it more difficult to conceive. Once your BMI falls within the appropriate range, make an effort to maintain your weight.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"c3-3-1\"><span class=\"ez-toc-section\" id=\"Dieting_During_Pregnancy_Planning\"><\/span>Dieting During Pregnancy Planning<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<ul class=\"well wp-block-list\">\n<li>Eating a Balanced Diet While Reducing the Overall Amount<\/li>\n\n\n\n<li>Losing Weight While Maintaining Muscle Mass<\/li>\n\n\n\n<li>The Two Weeks After Your Period Ends is an Easier Time to Lose Weight<\/li>\n<\/ul>\n\n\n\n<p>While dietary restrictions can lead to weight loss, they can also result in an unbalanced diet and potential health issues. Even if your BMI is within the appropriate range, being unhealthy can make it more difficult to conceive. For example, low-carb diets that restrict one nutrient are not ideal during pregnancy planning.<\/p>\n\n\n\n<p>When you lose weight, you also lose muscle mass. To lose weight healthily, combine weight training with your weight loss efforts to slow down muscle loss.<\/p>\n\n\n\n<p>Additionally, basal body temperature can be a good indicator for dieting. The week following the end of your period, when your basal body temperature is low, and the week after that, when your basal body temperature starts to rise, are good times to lose weight.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"c4\"><span class=\"ez-toc-section\" id=\"Underweight_Obesity_and_Pregnancy_During_Planning\"><\/span>Underweight, Obesity, and Pregnancy During Planning<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Weight during pregnancy planning affects the ease of conception. Here we explain why maintaining an appropriate weight is necessary and the relationship between weight outside the appropriate range and infertility.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"c4-1\"><span class=\"ez-toc-section\" id=\"The_Importance_of_Maintaining_a_Healthy_Weight\"><\/span>The Importance of Maintaining a Healthy Weight<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Maintaining an appropriate weight during pregnancy planning is important not only because it makes it easier to conceive but also because being underweight or overweight is believed to affect the baby after pregnancy.<\/p>\n\n\n\n<blockquote>\n  <p>It has been reported that women who were underweight before pregnancy have a higher risk of preterm birth and delivering low birth weight infants compared to women of normal weight.<\/p>\n  <cite>Source: National Institutes of Biomedical Innovation, Health and Nutrition &#8211; <a href=\"https:\/\/www.nibiohn.go.jp\/eiken\/ninsanpu\/download_files\/houkokusyo.pdf\" target=\"blank\" rel=\"noopener\">Research Report on the Revision and Promotion of Dietary Guidelines for Pregnant Women<\/a><\/cite>\n<\/blockquote>\n\n\n\n<p>Additionally, a BMI of 25 or higher is associated with a higher likelihood of ovulation disorders and decreased egg quality, leading to lower pregnancy rates. After conception, the risk of miscarriage and gestational diabetes also increases.<\/p>\n\n\n\n<p>Maintaining an appropriate weight is important for both the ease of conception and the health of the baby.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"c4-2\"><span class=\"ez-toc-section\" id=\"The_Relationship_Between_UnderweightOverweight_and_Infertility\"><\/span>The Relationship Between Underweight\/Overweight and Infertility<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Being underweight or overweight can decrease the chances of conception. This is because the following conditions are more likely to occur in a woman&#8217;s body due to being underweight or overweight:<\/p>\n\n\n\n<ul class=\"well wp-block-list\">\n<li>Ovulation disorders<\/li>\n\n\n\n<li>Irregular menstruation<\/li>\n\n\n\n<li>Polycystic ovary syndrome (PCOS)<\/li>\n<\/ul>\n\n\n\n<p>Here, we will explain in detail how these conditions are related to infertility.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"c4-2-1\"><span class=\"ez-toc-section\" id=\"Ovulation_Disorders\"><\/span>Ovulation Disorders<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Ovulation disorders refer to the improper occurrence of ovulation.<\/p>\n\n\n\n<p>Ovulation is essential for conception, as it prepares the egg to meet the sperm. Without proper ovulation, natural pregnancy becomes difficult.<\/p>\n\n\n\n<p>Obesity is closely related to anovulation. Anovulation means that although menstruation occurs, ovulation does not. Additionally, polycystic ovary syndrome (PCOS), which will be explained later, is strongly associated with obesity and can cause ovulation disorders.<\/p>\n\n\n\n<p>There are two main reasons why being underweight can cause ovulation disorders:<\/p>\n\n\n\n<ul class=\"well wp-block-list\">\n<li>The ovaries&#8217; functions are weakened.<\/li>\n\n\n\n<li>The amount of estrogen is low.<\/li>\n<\/ul>\n\n\n\n<p>Being underweight indicates a state of excessive nutritional and energy deficiency. The brain prioritizes survival, thus weakening the function of the ovaries and directing nutrients and energy to vital organs.<\/p>\n\n\n\n<p>The amount of estrogen is proportional to the amount of fat. Therefore, underweight individuals may have difficulty secreting estrogen. One of the roles of estrogen is to prepare for pregnancy by developing and maintaining reproductive organs. A lack of estrogen means that the body cannot adequately prepare for pregnancy, making it harder for underweight individuals to conceive.<\/p>\n\n\n\n    <a href=\"\/nipt\/points-before-pregnancy\" class=\"blog-card\">\n      <div class=\"blog-card-content\">\n          <div class=\"blog-card-title\">\u598a\u6d3b\u524d\u3068\u598a\u5a20\u5f8c\u306b\u6ce8\u610f\u3059\u308b\u3079\u304d\u3053\u3068\u3000\u598a\u5a20\u3057\u305f\u3089\u3084\u308b\u3079\u304d\u3053\u3068\u306f\uff1f\u3010\u533b\u5e2b\u76e3\u4fee\u3011 <\/div>\n          <div class=\"blog-card-excerpt\">\u598a\u5a20\u3092\u671b\u3080\u65b9\u306f\u8eab\u4f53\u3092\u6574\u3048\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3092\u4e00\u822c\u7684\u306b\u598a\u6d3b\u3068\u3044\u3044\u3001\u751f\u6d3b\u74b0\u5883\u3092\u898b\u76f4\u3059\u3053\u3068\u306e\u307b\u304b\u5065\u5eb7\u30c1\u30a7\u30c3\u30af\u3084\u592b\u5a66\u9593\u3067\u306e\u8a71\u3057\u5408\u3044\u306a\u3069\u3092\u304a\u3053\u306a\u3046...<\/div>\n      <\/div>\n    <\/a>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"c4-2-2\"><span class=\"ez-toc-section\" id=\"Irregular_Menstruation\"><\/span>Irregular Menstruation<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Irregular menstruation refers to the absence of a normal menstrual cycle. A normal cycle ranges from 24 to 38 days, with variations within 6 days considered typical.<\/p>\n\n\n\n<p>Both being underweight and overweight can cause irregular menstruation. One possible cause is leptin. Leptin is a hormone that suppresses appetite and also plays a role in regulating reproductive functions. Leptin is produced in fat cells.<\/p>\n\n\n\n<p>In the case of being underweight, there is less fat, and therefore, less leptin is secreted. As a result, reproductive functions cannot be properly regulated, leading to irregular menstruation.<\/p>\n\n\n\n<p>Conversely, in the case of being overweight, it might be expected that more fat would lead to more leptin. However, in an obese state, leptin resistance increases. Leptin resistance means that leptin becomes less effective, making it difficult to regulate reproductive functions. As a result, irregular menstruation becomes more likely.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"c4-2-3\"><span class=\"ez-toc-section\" id=\"Polycystic_Ovary_Syndrome_PCOS\"><\/span>Polycystic Ovary Syndrome (PCOS)<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Polycystic ovary syndrome (PCOS) is one of the causes of ovulation disorders and makes it difficult for eggs to grow properly.<\/p>\n\n\n\n<p>There are two main reasons why eggs have difficulty growing:<\/p>\n\n\n\n<ul class=\"well wp-block-list\">\n<li>Excessive production of male hormones in the ovaries<\/li>\n\n\n\n<li>Imbalance of hormones required for ovulation<\/li>\n<\/ul>\n\n\n\n<p>Obesity is said to increase the production of male hormones. Male hormones inhibit the development of follicles and thicken the tunica albuginea of the ovaries, making ovulation difficult.<\/p>\n\n\n\n<p>When a lot of insulin is secreted, male hormones also increase. Obese individuals often have insulin resistance, meaning insulin becomes less effective. When insulin is less effective, the body compensates by secreting more insulin.<\/p>\n\n\n\n<p>For normal ovulation, a balanced secretion of LH (luteinizing hormone) and FSH (follicle-stimulating hormone) is necessary. However, in polycystic ovary syndrome (PCOS), there is excessive secretion of LH (luteinizing hormone), disrupting the balance and preventing proper ovulation.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"c5\"><span class=\"ez-toc-section\" id=\"Lifestyle_During_Pregnancy_Planning\"><\/span>Lifestyle During Pregnancy Planning<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>For a body that is conducive to pregnancy, maintaining a healthy lifestyle is crucial, with a balanced diet and regular exercise being particularly important.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"c5-1\"><span class=\"ez-toc-section\" id=\"Diet_for_Weight_Management\"><\/span>Diet for Weight Management<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>During pregnancy planning, strive to maintain a balanced diet. Whether you need to gain or lose weight, a balanced diet remains essential.<\/p>\n\n\n\n<p>We will provide a detailed explanation of what constitutes a balanced diet and the nutrients that should be consumed during pregnancy planning.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"c5-1-1\"><span class=\"ez-toc-section\" id=\"Recommended_Diet_for_Weight_Management_During_Pregnancy_Planning\"><\/span>Recommended Diet for Weight Management During Pregnancy Planning<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>A balanced diet includes at least two meals a day that consist of a staple food, main dish, and side dish.<\/p>\n\n\n\n<p>This is specified in the &#8220;Guidelines for the Diet of Pregnant Women Starting from Pre-Pregnancy&#8221; by the Ministry of Health, Labour and Welfare in 2021. Additionally, the definitions of staple food, main dish, and side dish are as follows:<\/p>\n\n\n\n<blockquote>\n  <p><strong>Main Dish (Staple)<\/strong><br>\n  Foods that are primarily sources of carbohydrates such as rice, bread, noodles, and pasta.<\/p>\n  <p><strong>Main Course<\/strong><br>\n  Dishes that are primarily sources of protein, including meat, fish, eggs, soybeans, and soybean products.<\/p>\n  <p><strong>Side Dish<\/strong><br>\n  Dishes that are primarily sources of vitamins, minerals, and dietary fiber, such as vegetables.<\/p>\n  <cite>Source: Ministry of Health, Labour and Welfare &#8211; <a href=\"https:\/\/www.mhlw.go.jp\/content\/000776926.pdf\" target=\"blank\" rel=\"noopener\">Guidelines for the Diet of Pregnant Women Starting from Pre-Pregnancy<\/a><\/cite>\n<\/blockquote>\n\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"600\" height=\"400\" src=\"\/nipt\/wp-content\/uploads\/2023\/01\/pregnancy-weight-management02-1.jpg\" alt=\"\u598a\u6d3b\u4e2d\u306e\u98df\u751f\u6d3b\" class=\"wp-image-49331\"\/><\/figure><\/div>\n\n\n<h4 class=\"wp-block-heading\" id=\"c5-1-2\"><span class=\"ez-toc-section\" id=\"Recommended_Nutrients_During_Pregnancy_Planning\"><\/span>Recommended Nutrients During Pregnancy Planning<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Folic acid is particularly recommended. Folic acid is a type of vitamin essential for reducing the risk of neural tube defects in babies. The recommended intake of folic acid is 400 \u03bcg per day.<\/p>\n\n\n\n<p>Additionally, the following micronutrients should be consumed in greater amounts after pregnancy compared to before pregnancy:<\/p>\n\n\n\n<ul class=\"well wp-block-list\">\n<li>Vitamin A<\/li>\n\n\n\n<li>Vitamin D<\/li>\n\n\n\n<li>Vitamin B1<\/li>\n\n\n\n<li>Vitamin B2<\/li>\n\n\n\n<li>Vitamin B6<\/li>\n\n\n\n<li>Vitamin C<\/li>\n\n\n\n<li>Calcium<\/li>\n\n\n\n<li>Magnesium<\/li>\n\n\n\n<li>Iron<\/li>\n\n\n\n<li>Zinc<\/li>\n<\/ul>\n\n\n\n<p>It is challenging to drastically change your diet after becoming pregnant. Therefore, ensure you consume enough of these nutrients in your diet even before pregnancy.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"c5-2\"><span class=\"ez-toc-section\" id=\"Recommended_Exercises_During_Pregnancy_Planning\"><\/span>Recommended Exercises During Pregnancy Planning<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>We recommend squats as they help enhance ovarian function.<\/p>\n\n\n\n<p>Having more muscle in the lower body is believed to increase the secretion of female hormones and improve blood flow to the ovaries. If muscle training is too strenuous, start with activities such as stair climbing or walking.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"c6\"><span class=\"ez-toc-section\" id=\"NIPT_Non-Invasive_Prenatal_Testing_After_Pregnancy_is_Confirmed\"><\/span>NIPT (Non-Invasive Prenatal Testing) After Pregnancy is Confirmed<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/nipt\/\">NIPT (Non-Invasive Prenatal Testing)<\/a> is a test that helps prepare for childbirth while the baby is still in the womb. It can identify congenital diseases caused by genetic abnormalities and determine the baby&#8217;s gender.<\/p>\n\n\n\n<p>There are reports that a high maternal BMI at the time of conception is associated with an increased risk of congenital heart defects. It is also believed to increase the risk of other congenital disorders.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/\">NIPT<\/a> (Non-Invasive Prenatal Testing) is a test that meets the needs of parents who want to prepare the best possible environment for their baby even before birth.<\/p>\n\n\n\n    <a href=\"\/nipt\/nipt\/nipt\/\" class=\"blog-card\">\n      <div class=\"blog-card-content\">\n          <div class=\"blog-card-title\">\u77e5\u7684\u969c\u304c\u3044\u304c\u308f\u304b\u308bNIPT\u3068\u306f\uff08NIPT\u306e\u57fa\u672c\uff09 <\/div>\n          <div class=\"blog-card-excerpt\">\u30d2\u30ed\u30af\u30ea\u30cb\u30c3\u30af\u3067\u884c\u3063\u3066\u3044\u308bNIPT\u306e\u307e\u3068\u3081\u3067\u3059\u3002\u30d2\u30ed\u30af\u30ea\u30cb\u30c3\u30af\u306eNIPT\u3067\u306f\u77e5\u7684\u969c\u5bb3\u30fb\u767a\u9054\u969c\u5bb3\u3092\u4f34\u3046\u591a\u6570\u306e\u75be\u60a3\u3092\u51fa\u751f\u524d\u306b\u691c\u51fa\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067...<\/div>\n      <\/div>\n    <\/a>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"c7\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>For pregnancy planning, aim for an appropriate weight first. Having a BMI within the normal range is one indicator of ease of conception.<\/p>\n\n\n\n<p>However, weight is just a guideline. Even if your weight is appropriate, not maintaining a healthy diet or regular exercise can make it more difficult to conceive. Additionally, lacking physical strength or muscle mass can increase the burden of childbirth and childcare.<\/p>\n\n\n\n<p>Start building a body today that can endure pregnancy and childcare.<\/p>\n\n\n\n<div class=\"wp-block-group references\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p>\u3010References\u3011<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>National Institute of Health and Nutrition &#8211; <a rel=\"noopener\" href=\"https:\/\/www.nibiohn.go.jp\/eiken\/ninsanpu\/weightgain.html\" target=\"_blank\">Appropriate Weight Gain During Pregnancy<\/a><\/li>\n\n\n\n<li>PubMed &#8211; <a rel=\"noopener\" href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/27666564\/\" target=\"_blank\">Extremities of body mass index and their association with pregnancy outcomes in women undergoing in vitro fertilization in the United States<\/a>\uff0fJennifer F Kawwass 1, Aniket D Kulkarni 2, Heather S Hipp 3, Sara Crawford 2, Dmitry M Kissin 3, Denise J Jamieson 3<\/li>\n\n\n\n<li>National Institute of Health and Nutrition &#8211; <a rel=\"noopener\" href=\"https:\/\/www.nibiohn.go.jp\/eiken\/ninsanpu\/download_files\/houkokusyo.pdf\" target=\"_blank\">Research Report on the Revision and Promotion of Dietary Guidelines for Pregnant Women<\/a><\/li>\n\n\n\n<li>MSD Manual &#8211; <a rel=\"noreferrer noopener\" href=\"https:\/\/www.msdmanuals.com\/ja-jp\/%E3%83%97%E3%83%AD%E3%83%95%E3%82%A7%E3%83%83%E3%82%B7%E3%83%A7%E3%83%8A%E3%83%AB\/18-%E5%A9%A6%E4%BA%BA%E7%A7%91%E3%81%8A%E3%82%88%E3%81%B3%E7%94%A3%E7%A7%91\/%E4%B8%8D%E5%A6%8A%E7%97%87\/%E6%8E%92%E5%8D%B5%E9%9A%9C%E5%AE%B3#:~:text=%E6%8E%92%E5%8D%B5%E9%9A%9C%E5%AE%B3%E3%81%AF%EF%BC%8C%E6%8E%92%E5%8D%B5%E3%81%AE,%E3%81%AB%E3%82%88%E3%82%8B%E6%8E%92%E5%8D%B5%E8%AA%98%E7%99%BA%E3%82%92%E8%A1%8C%E3%81%86%E3%80%82\" data-type=\"URL\" data-id=\"https:\/\/www.msdmanuals.com\/ja-jp\/%E3%83%97%E3%83%AD%E3%83%95%E3%82%A7%E3%83%83%E3%82%B7%E3%83%A7%E3%83%8A%E3%83%AB\/18-%E5%A9%A6%E4%BA%BA%E7%A7%91%E3%81%8A%E3%82%88%E3%81%B3%E7%94%A3%E7%A7%91\/%E4%B8%8D%E5%A6%8A%E7%97%87\/%E6%8E%92%E5%8D%B5%E9%9A%9C%E5%AE%B3#:~:text=%E6%8E%92%E5%8D%B5%E9%9A%9C%E5%AE%B3%E3%81%AF%EF%BC%8C%E6%8E%92%E5%8D%B5%E3%81%AE,%E3%81%AB%E3%82%88%E3%82%8B%E6%8E%92%E5%8D%B5%E8%AA%98%E7%99%BA%E3%82%92%E8%A1%8C%E3%81%86%E3%80%82\" target=\"_blank\">Ovulation Disorders<\/a><\/li>\n\n\n\n<li>Shimane University Faculty of Medicine, Department of Obstetrics and Gynecology &#8211; <a rel=\"noopener\" href=\"http:\/\/www.shimane-u-obgyn.jp\/patient\/patient-other\/133\/141\/149\" target=\"_blank\">Polycystic Ovarian Syndrome (PCOS)<\/a><\/li>\n\n\n\n<li>Ministry of Health, Labour and Welfare &#8211; <a rel=\"noreferrer noopener\" href=\"https:\/\/www.mhlw.go.jp\/content\/000776926.pdf\" data-type=\"URL\" data-id=\"https:\/\/www.mhlw.go.jp\/content\/000776926.pdf\" target=\"_blank\">Dietary Guidelines for Pregnant Women Starting from Pre-Pregnancy<\/a><\/li>\n\n\n\n<li>Japan Society for the Study of Obesity &#8211; <a rel=\"noopener\" href=\"http:\/\/himan.jp\/column\/diseases\/011.html#:~:text=%E8%84%82%E8%82%AA%E7%B4%B0%E8%83%9E%E3%81%8B%E3%82%89%E5%88%86%E6%B3%8C%E3%81%95%E3%82%8C,%E3%81%AE%E3%81%AF%E3%81%93%E3%81%AE%E3%81%9F%E3%82%81%E3%81%A7%E3%81%99%E3%80%82\" target=\"_blank\">11. Obesity and Menstrual Disorders\/Pregnancy Complications<\/a><\/li>\n<\/ul>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"Summary of This Arti&#8230;\n <a href=\"https:\/\/www.hiro-clinic.or.jp\/nipt\/pregnancy-weight-management\/?lang=en\">\u7d9a\u304d\u3092\u8aad\u3080<\/a>","protected":false},"author":13,"featured_media":49323,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[364],"tags":[],"class_list":["post-80212","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-from-pregnancy-to-childbirth"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/posts\/80212","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/users\/13"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/comments?post=80212"}],"version-history":[{"count":3,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/posts\/80212\/revisions"}],"predecessor-version":[{"id":118271,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/posts\/80212\/revisions\/118271"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/media\/49323"}],"wp:attachment":[{"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/media?parent=80212"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/categories?post=80212"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hiro-clinic.or.jp\/nipt\/wp-json\/wp\/v2\/tags?post=80212"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}