{"id":15472,"date":"2026-03-12T17:36:13","date_gmt":"2026-03-12T16:36:13","guid":{"rendered":"https:\/\/kinderwunschaerztin.de\/vitamin-d-and-fertility\/"},"modified":"2026-10-06T15:15:28","modified_gmt":"2026-10-06T14:15:28","slug":"vitamin-d-and-fertility","status":"publish","type":"post","link":"https:\/\/kinderwunschaerztin.de\/en\/vitamin-d-and-fertility\/","title":{"rendered":"Vit\u00ada\u00admin D and Fer\u00adtil\u00adi\u00adty"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Few vit\u00ada\u00admins are dis\u00adcussed as exten\u00adsive\u00adly and con\u00adtro\u00adver\u00adsial\u00adly as vit\u00ada\u00admin D. It is a fas\u00adci\u00adnat\u00ading vit\u00ada\u00admin because it can be obtained through diet on the one hand, and on the oth\u00ader hand, a large por\u00adtion is pro\u00adduced by the body itself in the skin through sun expo\u00adsure (UVB light). Vit\u00ada\u00admin D is found in only a few foods (e.g., fat\u00adty sea fish, organ meats, and to a less\u00ader extent in egg yolk and mar\u00adgarine), so only a small amount, approx\u00adi\u00admate\u00adly 10\u201320%, can be obtained through diet, while a much larg\u00ader por\u00adtion must be pro\u00adduced by the body itself through sun expo\u00adsure. Unfor\u00adtu\u00adnate\u00adly, in our lat\u00adi\u00adtudes, this is only pos\u00adsi\u00adble from approx\u00adi\u00admate\u00adly March to Octo\u00adber, and vit\u00ada\u00admin D defi\u00adcien\u00adcy is quite com\u00admon. For women or cou\u00adples try\u00ading to con\u00adceive, the ques\u00adtion often aris\u00ades as to what role vit\u00ada\u00admin D plays in fer\u00adtil\u00adi\u00adty.   <\/p>\n\n<ul class=\"wp-block-list is-style-toc\">\n<li id=\"warum_vitamin-d\"><a href=\"#warum_vitamin_d\" id=\"#warum_vitamin-d\">Why is vit\u00ada\u00admin D impor\u00adtant for health?<\/a><\/li>\n\n\n\n<li id=\"vitamin_d_bestimmen\"><a href=\"#typical\"><\/a><a href=\"https:\/\/kinderwunschaerztin.de\/en\/signs-of-an-ectopic-pregnancy-in-the-5th-week-of-pregnancy\/#symptome_eileiterschwangerschaft\"><\/a><a href=\"#vitamin_d_bestimmen\">How can vit\u00ada\u00admin D lev\u00adels be deter\u00admined?<\/a><\/li>\n\n\n\n<li id=\"einnahme_vitamin_d\"><a href=\"#einnahme_vitamin_d\">What are the rec\u00adom\u00admen\u00adda\u00adtions for sup\u00adple\u00admen\u00adta\u00adtion?<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/kinderwunschaerztin.de\/en\/signs-of-an-ectopic-pregnancy-in-the-5th-week-of-pregnancy\/#diagnostik\"><\/a><a href=\"#vitamin_d_fruchtbarkeit\" id=\"#vitamin_d_fruchtbarkeit\">What influ\u00adence does vit\u00ada\u00admin D have on fer\u00adtil\u00adi\u00adty and the chance of becom\u00ading preg\u00adnant?<\/a><\/li>\n\n\n\n<li><a href=\"#faqs\">Fre\u00adquent\u00adly asked ques\u00adtions about vit\u00ada\u00admin D and fer\u00adtil\u00adi\u00adty<\/a><\/li>\n<\/ul>\n\n<h3 class=\"gb-text\" id=\"warum_vitamin_d\">Why is vit\u00ada\u00admin D impor\u00adtant for health?<\/h3>\n\n<p class=\"wp-block-paragraph\">Vit\u00ada\u00admin D is involved in many meta\u00adbol\u00adic process\u00ades and in the reg\u00adu\u00adla\u00adtion of a mul\u00adti\u00adtude of genes. There are numer\u00adous stud\u00adies show\u00ading a cor\u00adre\u00adla\u00adtion between vit\u00ada\u00admin D lev\u00adels and the occur\u00adrence of chron\u00adic dis\u00adeases, autoim\u00admune dis\u00adeases, can\u00adcer, and car\u00addio\u00advas\u00adcu\u00adlar dis\u00adeases. How\u00adev\u00ader, a causal rela\u00adtion\u00adship has not yet been demon\u00adstrat\u00aded.  <\/p>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<h3 class=\"gb-text\" id=\"vitamin_d_bestimmen\">How can vit\u00ada\u00admin D lev\u00adels be deter\u00admined?<\/h3>\n\n<p class=\"wp-block-paragraph\" id=\"message\">Vit\u00ada\u00admin D lev\u00adels can be mea\u00adsured in the blood. Accord\u00ading to inter\u00adna\u00adtion\u00adal cri\u00adte\u00adria, a val\u00adue  12 ng\/ml indi\u00adcates vit\u00ada\u00admin D defi\u00adcien\u00adcy, and a val\u00adue  20 ng\/ml indi\u00adcates sub\u00adop\u00adti\u00admal sup\u00adply. <\/p>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<h3 class=\"gb-text\" id=\"einnahme_vitamin_d\">What are the rec\u00adom\u00admen\u00adda\u00adtions for sup\u00adple\u00admen\u00adta\u00adtion?<\/h3>\n\n<p class=\"wp-block-paragraph\" id=\"message\">The Ger\u00adman Nutri\u00adtion Soci\u00adety rec\u00adom\u00admends that adults take 20 \u00b5g of vit\u00ada\u00admin D per day. In many sup\u00adple\u00adments, the dosage is giv\u00aden in units, which cor\u00adre\u00adsponds to 800 I.U. How\u00adev\u00ader, this only applies under the con\u00addi\u00adtion that the body does not pro\u00adduce its own vit\u00ada\u00admin D. <\/p>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<h3 class=\"gb-text\" id=\"vitamin_d_fruchtbarkeit\">What influ\u00adence does vit\u00ada\u00admin D have on fer\u00adtil\u00adi\u00adty and the chance of becom\u00ading preg\u00adnant?<\/h3>\n\n<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"500\" class=\"dl-img-left gb-media-3554a67f\" alt=\"Pregnant woman forming a heart with her hand on her belly\" title=\"Pregnancy (2)\" src=\"https:\/\/kinderwunschaerztin.de\/wp-content\/uploads\/Schwangerschaft-2.jpg\" srcset=\"https:\/\/kinderwunschaerztin.de\/wp-content\/uploads\/Schwangerschaft-2.jpg 800w, https:\/\/kinderwunschaerztin.de\/wp-content\/uploads\/Schwangerschaft-2-300x188.jpg 300w, https:\/\/kinderwunschaerztin.de\/wp-content\/uploads\/Schwangerschaft-2-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\">\n\n<p class=\"wp-block-paragraph\">Inter\u00adest\u00ading\u00adly, preg\u00adnan\u00adcy rates in our north\u00adern hemi\u00adsphere fluc\u00adtu\u00adate depend\u00ading on the sea\u00adsons. Preg\u00adnan\u00adcy rates are high\u00adest in sum\u00admer and autumn, the sea\u00adsons with the high\u00adest vit\u00ada\u00admin D con\u00adcen\u00adtra\u00adtions (Muscogiuri et al. 2017). <\/p>\n\n<p class=\"wp-block-paragraph\">A num\u00adber of stud\u00adies in high-rank\u00ading jour\u00adnals describe a pos\u00adi\u00adtive cor\u00adre\u00adla\u00adtion between preg\u00adnan\u00adcy and birth rates and vit\u00ada\u00admin D lev\u00adels. A large review that exam\u00adined 11 stud\u00adies with a total of over 2,700 women showed that in IVF\/ICSI treat\u00adment, the chances of preg\u00adnan\u00adcy and live birth rates are low\u00ader in women with low vit\u00ada\u00admin D lev\u00adels than in women with ade\u00adquate vit\u00ada\u00admin D sup\u00adply (Chu et al. 2018). <\/p>\n\n<p class=\"wp-block-paragraph\">Anoth\u00ader study in Eng\u00adland exam\u00adined vit\u00ada\u00admin D lev\u00adels and live birth rates after assist\u00aded repro\u00adduc\u00adtion in 500 women. 50% of the women had vit\u00ada\u00admin D defi\u00adcien\u00adcy, 30% had low vit\u00ada\u00admin D lev\u00adels between 20\u201329 \u00b5g\/l, and only 16% had suf\u00adfi\u00adcient\u00adly high vit\u00ada\u00admin D lev\u00adels of &gt; 30 \u00b5g\/l. The results showed that 24% of women with low, 27% of women with medi\u00adum vit\u00ada\u00admin D, and 34% of women with a val\u00adue &gt; 30 \u00b5g\/l had a live birth (Chue et al. 2019).  <\/p>\n\n<p class=\"wp-block-paragraph\">Addi\u00adtion\u00adal stud\u00adies show a pos\u00adi\u00adtive cor\u00adre\u00adla\u00adtion between AMH lev\u00adels, ovar\u00adi\u00adan reserve, and vit\u00ada\u00admin D lev\u00adels.<\/p>\n\n<p class=\"wp-block-paragraph\">Com\u00admon con\u00addi\u00adtions asso\u00adci\u00adat\u00aded with fer\u00adtil\u00adi\u00adty, such as PCOS and endometrio\u00adsis, are also linked to low vit\u00ada\u00admin D lev\u00adels.<\/p>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<div class=\"dl-grid--33-67 dl-blocks--faq\" id=\"faqs\">\n<div>\n<h2 class=\"gb-text\" id=\"faqs\">Fre\u00adquent\u00adly Asked Ques\u00adtions About Vit\u00ada\u00admin D and Fer\u00adtil\u00adi\u00adty<\/h2>\n<\/div>\n\n\n\n<div>\n<div class=\"gb-accordion dl-accordion\">\n<div class=\"gb-accordion__item gb-accordion__item-b101c92c\">\n<div role=\"button\" tabindex=\"0\" class=\"gb-accordion__toggle\" id=\"gb-accordion-content-0edea186\">\n<h3 class=\"gb-text\"><strong>What symp\u00adtoms occur with vit\u00ada\u00admin D defi\u00adcien\u00adcy?<\/strong><\/h3>\n\n\n\n<span class=\"gb-accordion__toggle-icon\"><span class=\"gb-accordion__toggle-icon-open\"><\/span><span class=\"gb-accordion__toggle-icon-close\"><\/span><\/span>\n<\/div>\n\n\n\n<div class=\"gb-accordion__content\" id=\"gb-accordion-content-3e45d344\">\n<div>\n<p class=\"wp-block-paragraph\">Those affect\u00aded fre\u00adquent\u00adly report fatigue, exhaus\u00adtion, mus\u00adcle or bone pain, and increased sus\u00adcep\u00adti\u00adbil\u00adi\u00adty to infec\u00adtions. Since these symp\u00adtoms are non\u00adspe\u00adcif\u00adic, a blood test pro\u00advides the most clar\u00adi\u00adty. <\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"gb-accordion__item gb-accordion__item-5034b1a2\">\n<div role=\"button\" tabindex=\"0\" class=\"gb-accordion__toggle\" id=\"gb-accordion-content-0edea186\">\n<h3 class=\"gb-text\"><strong>Can vit\u00ada\u00admin D defi\u00adcien\u00adcy pre\u00advent preg\u00adnan\u00adcy?<\/strong><\/h3>\n\n\n\n<span class=\"gb-accordion__toggle-icon\"><span class=\"gb-accordion__toggle-icon-open\"><\/span><span class=\"gb-accordion__toggle-icon-close\"><\/span><\/span>\n<\/div>\n\n\n\n<div class=\"gb-accordion__content\" id=\"gb-accordion-content-a10d1099\">\n<div>\n<p class=\"wp-block-paragraph\">Vit\u00ada\u00admin D defi\u00adcien\u00adcy is usu\u00adal\u00adly not the sole rea\u00adson for fail\u00adure to con\u00adceive, but it can indi\u00adrect\u00adly affect fer\u00adtil\u00adi\u00adty. It is there\u00adfore advis\u00adable to deter\u00admine the lev\u00adel (25-OH-vit\u00ada\u00admin D) in the blood rather than tak\u00ading high dos\u00ades with\u00adout con\u00adfir\u00adma\u00adtion. <\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"gb-accordion__item gb-accordion__item-df054a9c\">\n<div role=\"button\" tabindex=\"0\" class=\"gb-accordion__toggle\" id=\"gb-accordion-content-0edea186\">\n<h3 class=\"gb-text\"><strong>How much vit\u00ada\u00admin D should one take for fer\u00adtil\u00adi\u00adty?<\/strong><\/h3>\n\n\n\n<span class=\"gb-accordion__toggle-icon\"><span class=\"gb-accordion__toggle-icon-open\"><\/span><span class=\"gb-accordion__toggle-icon-close\"><\/span><\/span>\n<\/div>\n\n\n\n<div class=\"gb-accordion__content\" id=\"gb-accordion-content-e6526a69\">\n<div>\n<p class=\"wp-block-paragraph\">The Ger\u00adman Nutri\u00adtion Soci\u00adety rec\u00adom\u00admends that adults take 20 \u00b5g of vit\u00ada\u00admin D per day (equiv\u00ada\u00adlent to 800 I.U.) when the body does not pro\u00adduce its own vit\u00ada\u00admin D. The dosage that is appro\u00adpri\u00adate for you when try\u00ading to con\u00adceive should first be deter\u00admined med\u00adical\u00adly through blood test\u00ading.  <\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"gb-accordion__item gb-accordion__item-960a5fe1\">\n<div role=\"button\" tabindex=\"0\" class=\"gb-accordion__toggle\" id=\"gb-accordion-content-0edea186\">\n<h3 class=\"gb-text\"><strong>Why is it some\u00adtimes said \u201cno vit\u00ada\u00admin D\u201d dur\u00ading preg\u00adnan\u00adcy?<\/strong><\/h3>\n\n\n\n<span class=\"gb-accordion__toggle-icon\"><span class=\"gb-accordion__toggle-icon-open\"><\/span><span class=\"gb-accordion__toggle-icon-close\"><\/span><\/span>\n<\/div>\n\n\n\n<div class=\"gb-accordion__content\" id=\"gb-accordion-content-a6557bf3\">\n<div>\n<p class=\"wp-block-paragraph\">Vit\u00ada\u00admin D is not fun\u00adda\u00admen\u00adtal\u00adly pro\u00adhib\u00adit\u00aded dur\u00ading preg\u00adnan\u00adcy, but uncon\u00adtrolled high dos\u00ades can adverse\u00adly affect cal\u00adci\u00adum metab\u00ado\u00adlism. There\u00adfore, sup\u00adple\u00admen\u00adta\u00adtion should be dosed and ide\u00adal\u00adly coor\u00addi\u00adnat\u00aded with your physi\u00adcian or mid\u00adwife. <br><br><br><br><br><br><br><br><br><br><br><br><br><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n<div class=\"dl-grid--100 dl-blocks--notes\">\n<div>\n<div class=\"gb-accordion\">\n<div class=\"gb-accordion__item\">\n<div role=\"button\" tabindex=\"0\" class=\"gb-accordion__toggle\" id=\"gb-accordion-toggle-418fd31e\">\n<span class=\"gb-text\">Our Sources<\/span>\n\n\n\n<span class=\"gb-accordion__toggle-icon gb-accordion__toggle-icon-e6e676b0\"><span class=\"gb-accordion__toggle-icon-open\"><\/span><span class=\"gb-accordion__toggle-icon-close\"><\/span><\/span>\n<\/div>\n\n\n\n<div class=\"gb-accordion__content\" id=\"gb-accordion-content-f3b98e9c\">\n<div class=\"gb-element-03a6d77a\">\n<p class=\"wp-block-paragraph\">Muscogiuri G., Altieri B., de Ange\u00adlis C., Palom\u00adba S., Pivonel\u00adlo R., Colao A., Orio F. Shed\u00adding new light on female fer\u00adtil\u00adi\u00adty: The role of vit\u00ada\u00admin D. Rev. Endocr. Metab. Dis\u00adord. 2017;18:273\u2013283   <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Chu J., Gal\u00adlos I., Tobias A., Tan B., Eapen A., Coomarasamy A. Vit\u00ada\u00admin D and assist\u00aded repro\u00adduc\u00adtive treat\u00adment out\u00adcome: A sys\u00adtem\u00adat\u00adic review and meta-analy\u00adsis. Hum. Reprod. 2018;33:65\u201380. <\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Few vit\u00ada\u00admins are dis\u00adcussed as exten\u00adsive\u00adly and con\u00adtro\u00adver\u00adsial\u00adly as vit\u00ada\u00admin D. It is a fas\u00adci\u00adnat\u00ading vit\u00ada\u00admin because it can be obtained through diet on the one hand, and on the oth\u00ader hand, a large por\u00adtion is pro\u00adduced by the body itself in the skin through sun expo\u00adsure (UVB light). Vit\u00ada\u00admin D is found in only \u2026 <a title=\"Vit\u00ada\u00admin D and Fer\u00adtil\u00adi\u00adty\" class=\"read-more\" href=\"https:\/\/kinderwunschaerztin.de\/en\/vitamin-d-and-fertility\/\" aria-label=\"Read more about Vit\u00ada\u00admin D and Fer\u00adtil\u00adi\u00adty\">Read more<\/a><\/p>\n","protected":false},"author":6,"featured_media":15473,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"wp_typography_post_enhancements_disabled":false,"footnotes":""},"categories":[225],"tags":[226],"class_list":["post-15472","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-medical-knowledge","tag-tese"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Vitamin D and Fertility<\/title>\n<meta name=\"description\" content=\"What role does vitamin D play in fertility? 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