{"id":818,"date":"2026-02-09T17:14:03","date_gmt":"2026-02-09T17:14:03","guid":{"rendered":"https:\/\/iqvibespro.com\/blog\/?p=818"},"modified":"2026-02-10T17:24:04","modified_gmt":"2026-02-10T17:24:04","slug":"vitamin-b12","status":"publish","type":"post","link":"https:\/\/iqvibespro.com\/blog\/vitamin-b12\/","title":{"rendered":"Vitamin B12"},"content":{"rendered":"\n<p><strong>Vitamin B12 (Cobalamin)<\/strong><\/p>\n\n\n\n<p><strong>Wichtigste Funktionen im Stoffwechsel:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Zellteilung &amp; DNA-Synthese:<\/strong>\u00a0Essentiell f\u00fcr die Bildung neuer Zellen, insbesondere f\u00fcr die Reifung roter Blutk\u00f6rperchen im Knochenmark.<\/li>\n\n\n\n<li><strong>Nervenfunktion:<\/strong>\u00a0Unerl\u00e4sslich f\u00fcr den Aufbau und Erhalt der\u00a0<strong>Myelinscheide<\/strong>, der sch\u00fctzenden Ummantelung der Nervenfasern. Wichtig f\u00fcr ein gesundes Nervensystem.<\/li>\n\n\n\n<li><strong>Homocystein-Stoffwechsel:<\/strong>\u00a0Arbeitet eng mit\u00a0<strong>Fols\u00e4ure (B9)<\/strong>\u00a0zusammen, um das potenziell sch\u00e4dliche Homocystein in Methionin umzuwandeln und so den Spiegel zu senken.<\/li>\n\n\n\n<li><strong>Energiestoffwechsel:<\/strong>\u00a0Beteiligt am Abbau bestimmter Fetts\u00e4uren und Aminos\u00e4uren.<\/li>\n<\/ul>\n\n\n\n<p><strong>Vorkommen in nat\u00fcrlicher Form:<\/strong><br>Vitamin B12 wird&nbsp;<strong>ausschlie\u00dflich von Mikroorganismen (Bakterien)<\/strong>&nbsp;produziert. Es kommt daher fast nur in&nbsp;<strong>tierischen Lebensmitteln<\/strong>&nbsp;vor, da Tiere diese Bakterien in ihrem Verdauungstrakt beherbergen oder mit kontaminierter Nahrung aufnehmen.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sehr gute Quellen:<\/strong>\u00a0Leber (v.a. Rind), Niere.<\/li>\n\n\n\n<li><strong>Gute Quellen:<\/strong>\u00a0Fleisch (Rind, Schwein, Gefl\u00fcgel), Fisch (v.a. Hering, Makrele, Lachs, Thunfisch), Meeresfr\u00fcchte (Muscheln).<\/li>\n\n\n\n<li><strong>Weitere Quellen:<\/strong>\u00a0Eier, Milch, K\u00e4se, Joghurt.<\/li>\n\n\n\n<li><strong>Pflanzliche Lebensmittel:<\/strong>\u00a0Enthalten\u00a0<strong>kein verwertbares B12<\/strong>, es sei denn, sie sind\u00a0<strong>angereichert<\/strong>(z.B. einige Pflanzenmilchsorten, Fr\u00fchst\u00fcckscerealien) oder\u00a0<strong>kontaminiert<\/strong>\u00a0(z.B. durch Bodenbakterien auf ungewaschenem Gem\u00fcse, was aber keine zuverl\u00e4ssige Quelle darstellt).<\/li>\n<\/ul>\n\n\n\n<p><strong>Besonderheiten &amp; Risikogruppen:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Speicherf\u00e4higkeit:<\/strong>\u00a0Der K\u00f6rper kann B12 in der Leber \u00fcber Jahre speichern, weshalb ein Mangel oft erst nach langer Zeit sichtbar wird.<\/li>\n\n\n\n<li><strong>Aufnahme:<\/strong>\u00a0Ben\u00f6tigt f\u00fcr die Resorption im Darm den\u00a0<strong>Intrinsischen Faktor<\/strong>, ein in der Magenschleimhaut gebildetes Protein. St\u00f6rungen hier f\u00fchren zum Mangel.<\/li>\n\n\n\n<li><strong>Risikogruppen f\u00fcr Mangel:<\/strong>\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>Vegetarier &amp; Veganer<\/strong>\u00a0(da keine tierischen Quellen).<\/li>\n\n\n\n<li><strong>\u00c4ltere Menschen<\/strong>\u00a0(h\u00e4ufig reduzierte Magens\u00e4ureproduktion und Bildung des Intrinsischen Faktors).<\/li>\n\n\n\n<li>Menschen mit\u00a0<strong>Magen-Darm-Erkrankungen<\/strong>\u00a0(z.B. atrophische Gastritis, Morbus Crohn, nach Magen-OP).<\/li>\n<\/ol>\n<\/li>\n\n\n\n<li><strong>Mangelsymptome:<\/strong>\u00a0Pernizi\u00f6se An\u00e4mie (megaloblast\u00e4re An\u00e4mie), neurologische St\u00f6rungen (Kribbeln, Taubheit, Ged\u00e4chtnisst\u00f6rungen), M\u00fcdigkeit, Schw\u00e4che.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Vitamin B12 (Cobalamin) Wichtigste Funktionen im Stoffwechsel: Vorkommen in nat\u00fcrlicher Form:Vitamin B12 wird&nbsp;ausschlie\u00dflich von Mikroorganismen (Bakterien)&nbsp;produziert. Es kommt daher fast nur in&nbsp;tierischen Lebensmitteln&nbsp;vor, da Tiere diese Bakterien in ihrem Verdauungstrakt beherbergen oder mit kontaminierter Nahrung aufnehmen. Besonderheiten &amp; Risikogruppen:<\/p>\n","protected":false},"author":2,"featured_media":819,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-818","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vitamine"],"_links":{"self":[{"href":"https:\/\/iqvibespro.com\/blog\/wp-json\/wp\/v2\/posts\/818","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/iqvibespro.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/iqvibespro.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/iqvibespro.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/iqvibespro.com\/blog\/wp-json\/wp\/v2\/comments?post=818"}],"version-history":[{"count":1,"href":"https:\/\/iqvibespro.com\/blog\/wp-json\/wp\/v2\/posts\/818\/revisions"}],"predecessor-version":[{"id":820,"href":"https:\/\/iqvibespro.com\/blog\/wp-json\/wp\/v2\/posts\/818\/revisions\/820"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/iqvibespro.com\/blog\/wp-json\/wp\/v2\/media\/819"}],"wp:attachment":[{"href":"https:\/\/iqvibespro.com\/blog\/wp-json\/wp\/v2\/media?parent=818"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/iqvibespro.com\/blog\/wp-json\/wp\/v2\/categories?post=818"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/iqvibespro.com\/blog\/wp-json\/wp\/v2\/tags?post=818"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}