{"id":772,"date":"2026-02-09T15:46:32","date_gmt":"2026-02-09T15:46:32","guid":{"rendered":"https:\/\/iqvibespro.com\/blog\/?p=772"},"modified":"2026-02-10T17:20:28","modified_gmt":"2026-02-10T17:20:28","slug":"vitamin-a","status":"publish","type":"post","link":"https:\/\/iqvibespro.com\/blog\/vitamin-a\/","title":{"rendered":"Vitamin A"},"content":{"rendered":"\n<p><strong>Vitamin A (Retinoide)<\/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>Sehvorgang (Hell-Dunkel-Sehen):<\/strong>&nbsp;Unverzichtbar f\u00fcr die Bildung des Sehpigments Rhodopsin in den St\u00e4bchen der Netzhaut.<\/li>\n\n\n\n<li><strong>Zellwachstum und -differenzierung:<\/strong>&nbsp;Entscheidend f\u00fcr die Entwicklung und Gesundheit von Haut und Schleimh\u00e4uten (z.B. in Atemwegen, Verdauungstrakt).<\/li>\n\n\n\n<li><strong>Immunsystem:<\/strong>&nbsp;St\u00e4rkt die Barrierefunktion der Schleimh\u00e4ute und die Aktivit\u00e4t von Immunzellen.<\/li>\n\n\n\n<li><strong>Reproduktion:<\/strong>&nbsp;Wichtig f\u00fcr die Embryonalentwicklung und die Spermienbildung.<\/li>\n\n\n\n<li><strong>Genregulation:<\/strong>&nbsp;Wirkt \u00fcber Retins\u00e4ure als Signalmolek\u00fcl im Zellkern.<\/li>\n<\/ul>\n\n\n\n<p><strong>Vorkommen in nat\u00fcrlicher Form in zwei Haupttypen:<\/strong><\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>Vorgeformtes Vitamin A (Retinylester, Retinol)<\/strong>\n<ul class=\"wp-block-list\">\n<li><strong>Tierische Lebensmittel:<\/strong>&nbsp;Leber, Fischleber\u00f6le (Lebertran), Eigelb, Butter, Vollmilchprodukte.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Provitamin A (Carotinoide, v.a. \u03b2-Carotin)<\/strong>\n<ul class=\"wp-block-list\">\n<li><strong>Pflanzliche Lebensmittel:<\/strong>&nbsp;Gelbe\/orange\/rote Gem\u00fcse und Fr\u00fcchte wie Karotten, S\u00fc\u00dfkartoffeln, K\u00fcrbis, Aprikosen, Mangos.<\/li>\n\n\n\n<li><strong>Dunkelgr\u00fcnes Blattgem\u00fcse:<\/strong>&nbsp;Spinat, Gr\u00fcnkohl.<\/li>\n\n\n\n<li>Der K\u00f6rper wandelt \u03b2-Carotin nach Bedarf in Vitamin A um.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p><strong>Hinweis:<\/strong>\u00a0Vitamin A ist fettl\u00f6slich und kann bei \u00dcberdosierung (v.a. durch tierische Lebensmittel oder Supplemente) gespeichert und toxisch wirken. <strong>Eine \u00dcberversorgung durch pflanzliches \u03b2-Carotin ist dagegen nicht gef\u00e4hrlich <\/strong>(h\u00f6chstens harmlose Gelbf\u00e4rbung der Haut). Ein Mangel kann zu Nachtblindheit, trockenen Augen (Xerophthalmie) und erh\u00f6hter Infektanf\u00e4lligkeit f\u00fchren.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vitamin A (Retinoide) Wichtigste Funktionen im Stoffwechsel: Vorkommen in nat\u00fcrlicher Form in zwei Haupttypen: Hinweis:\u00a0Vitamin A ist fettl\u00f6slich und kann bei \u00dcberdosierung (v.a. durch tierische Lebensmittel oder Supplemente) gespeichert und toxisch wirken. Eine \u00dcberversorgung durch pflanzliches \u03b2-Carotin ist dagegen nicht gef\u00e4hrlich (h\u00f6chstens harmlose Gelbf\u00e4rbung der Haut). Ein Mangel kann zu Nachtblindheit, trockenen Augen (Xerophthalmie) und erh\u00f6hter Infektanf\u00e4lligkeit f\u00fchren.<\/p>\n","protected":false},"author":2,"featured_media":773,"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-772","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\/772","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=772"}],"version-history":[{"count":4,"href":"https:\/\/iqvibespro.com\/blog\/wp-json\/wp\/v2\/posts\/772\/revisions"}],"predecessor-version":[{"id":865,"href":"https:\/\/iqvibespro.com\/blog\/wp-json\/wp\/v2\/posts\/772\/revisions\/865"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/iqvibespro.com\/blog\/wp-json\/wp\/v2\/media\/773"}],"wp:attachment":[{"href":"https:\/\/iqvibespro.com\/blog\/wp-json\/wp\/v2\/media?parent=772"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/iqvibespro.com\/blog\/wp-json\/wp\/v2\/categories?post=772"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/iqvibespro.com\/blog\/wp-json\/wp\/v2\/tags?post=772"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}