{"id":1873,"date":"2025-02-25T08:49:03","date_gmt":"2025-02-25T07:49:03","guid":{"rendered":"https:\/\/neuzeitaerztin.de\/vitamin-a\/"},"modified":"2025-09-16T14:36:20","modified_gmt":"2025-09-16T12:36:20","slug":"vitamin-a","status":"publish","type":"post","link":"https:\/\/neuzeitaerztin.de\/en\/vitamin-a\/","title":{"rendered":"Vitamin A"},"content":{"rendered":"<\/p>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-ktpp7g-23fdffcd7f1bc0da9174266a08e33fb4\">\n#top .av-special-heading.av-ktpp7g-23fdffcd7f1bc0da9174266a08e33fb4{\npadding-bottom:10px;\nfont-size:3vw;\n}\nbody .av-special-heading.av-ktpp7g-23fdffcd7f1bc0da9174266a08e33fb4 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n#top #wrap_all .av-special-heading.av-ktpp7g-23fdffcd7f1bc0da9174266a08e33fb4 .av-special-heading-tag{\nfont-size:3vw;\n}\n.av-special-heading.av-ktpp7g-23fdffcd7f1bc0da9174266a08e33fb4 .av-subheading{\nfont-size:15px;\n}\n\n@media only screen and (min-width: 480px) and (max-width: 767px){ \n#top #wrap_all .av-special-heading.av-ktpp7g-23fdffcd7f1bc0da9174266a08e33fb4 .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n\n@media only screen and (max-width: 479px){ \n#top #wrap_all .av-special-heading.av-ktpp7g-23fdffcd7f1bc0da9174266a08e33fb4 .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n<\/style>\n<div  class='av-special-heading av-ktpp7g-23fdffcd7f1bc0da9174266a08e33fb4 av-special-heading-h1 blockquote modern-quote  avia-builder-el-0  el_before_av_textblock  avia-builder-el-first  av-inherit-size'><h1 class='av-special-heading-tag '  itemprop=\"headline\"  >Vitamin A: an essential nutrient for your health<\/h1><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n<section  class='av_textblock_section av-j70se4-90948599532f121fd4c0748556bdf235 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p data-pm-slice=\"1 1 []\">Vitamin A is a fat-soluble vitamin that plays a crucial role in numerous bodily functions. It is essential for the immune system, vision, skin health and cell growth. But what exactly is behind this important nutrient and how can you ensure that your body gets enough of it?  <\/p>\n<\/div><\/section>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m4xc3fpv-02503dd2cc8d0469478743a8ed449e39\">\n.avia-image-container.av-m4xc3fpv-02503dd2cc8d0469478743a8ed449e39 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-m4xc3fpv-02503dd2cc8d0469478743a8ed449e39 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-m4xc3fpv-02503dd2cc8d0469478743a8ed449e39 av-styling- avia-align-center  avia-builder-el-2  el_after_av_textblock  el_before_av_heading '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-1878 avia-img-lazy-loading-not-1878 avia_image ' src=\"https:\/\/neuzeitaerztin.de\/wp-content\/uploads\/2025\/02\/letter-a-2143190_1280-773x1030.jpg\" alt='' title='Vitamin_A_New_Time_Doctor'  height=\"1030\" width=\"773\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/neuzeitaerztin.de\/wp-content\/uploads\/2025\/02\/letter-a-2143190_1280-773x1030.jpg 773w, https:\/\/neuzeitaerztin.de\/wp-content\/uploads\/2025\/02\/letter-a-2143190_1280-225x300.jpg 225w, https:\/\/neuzeitaerztin.de\/wp-content\/uploads\/2025\/02\/letter-a-2143190_1280-768x1024.jpg 768w, https:\/\/neuzeitaerztin.de\/wp-content\/uploads\/2025\/02\/letter-a-2143190_1280-529x705.jpg 529w, https:\/\/neuzeitaerztin.de\/wp-content\/uploads\/2025\/02\/letter-a-2143190_1280.jpg 960w\" sizes=\"(max-width: 773px) 100vw, 773px\" \/><\/div><\/div><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m4xc2e1s-cc1b05e4e990d4842c9030ce50651fdb\">\n#top .av-special-heading.av-m4xc2e1s-cc1b05e4e990d4842c9030ce50651fdb{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-m4xc2e1s-cc1b05e4e990d4842c9030ce50651fdb .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-m4xc2e1s-cc1b05e4e990d4842c9030ce50651fdb .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-m4xc2e1s-cc1b05e4e990d4842c9030ce50651fdb av-special-heading-h2 blockquote modern-quote  avia-builder-el-3  el_after_av_image  el_before_av_textblock '><h2 class='av-special-heading-tag '  itemprop=\"headline\"  >The functions of vitamin A<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n<section  class='av_textblock_section av-m4xc35ho-1ae019489689f5ff7b8d97f42fb2929c '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p data-pm-slice=\"1 3 []\">Vitamin A is essential for various processes in the body:<\/p>\n<ul data-spread=\"false\">\n<li><strong>Vision:<\/strong> It plays a central role in the visual process, especially in twilight vision. Studies have shown that an adequate supply of vitamin A improves visual performance and can prevent night blindness. <\/li>\n<li><strong>Immune system:<\/strong> Vitamin A helps to strengthen the immune system by supporting the formation of antibodies and regulating inflammatory processes. Research results indicate that vitamin A deficiencies increase the risk of infections. <\/li>\n<li><strong>Skin and mucous membranes:<\/strong> The vitamin supports the regeneration of skin cells and maintains the integrity of mucous membranes, which forms a protective barrier against pathogenic germs.<\/li>\n<li><strong>Cell growth:<\/strong> Essential for cell division and the development of tissues and organs, especially during embryonic development.<\/li>\n<\/ul>\n<\/div><\/section>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m4xc46pz-44b7ffac3a1b9a4ee894d5999b2108ce\">\n#top .av-special-heading.av-m4xc46pz-44b7ffac3a1b9a4ee894d5999b2108ce{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-m4xc46pz-44b7ffac3a1b9a4ee894d5999b2108ce .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-m4xc46pz-44b7ffac3a1b9a4ee894d5999b2108ce .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-m4xc46pz-44b7ffac3a1b9a4ee894d5999b2108ce av-special-heading-h3 blockquote modern-quote  avia-builder-el-5  el_after_av_textblock  el_before_av_textblock '><h3 class='av-special-heading-tag '  itemprop=\"headline\"  >Natural sources of vitamin A<\/h3><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n<section  class='av_textblock_section av-m4xcjsda-6d05e7dc3b16606b4df6faee0ba36fd5 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p data-pm-slice=\"1 1 []\">Vitamin A comes in two main forms: <strong>retinol<\/strong> (animal source) and <strong>beta-carotene<\/strong> (plant source). The best natural sources include: <\/p>\n<ul data-spread=\"false\">\n<li><strong>Animal foods:<\/strong> liver, egg yolk, fish oils, dairy products<\/li>\n<li><strong>Plant-based foods:<\/strong> carrots, sweet potatoes, kale, spinach, peppers<\/li>\n<\/ul>\n<p>The body can convert beta-carotene into vitamin A, which is why a balanced diet with lots of colorful vegetables is important. However, there are genetic variants that make this conversion more difficult or even prevent it. A SNP test can provide information on whether someone is able to efficiently convert beta-carotene into active vitamin A. People with this genetic variant should pay particular attention to taking in sufficient retinol from animal sources or targeted supplements.<\/p>\n<\/div><\/section>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m4xcgzrl-d23f2e107b3b67e48b9c7d474288f4e3\">\n.avia-image-container.av-m4xcgzrl-d23f2e107b3b67e48b9c7d474288f4e3 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-m4xcgzrl-d23f2e107b3b67e48b9c7d474288f4e3 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-m4xcgzrl-d23f2e107b3b67e48b9c7d474288f4e3 av-styling- avia-align-center  avia-builder-el-7  el_after_av_textblock  el_before_av_heading '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-1877 avia-img-lazy-loading-not-1877 avia_image ' src=\"https:\/\/neuzeitaerztin.de\/wp-content\/uploads\/2025\/02\/old-hand-7482417_1280-1030x685.jpg\" alt='' title='VitaminA_New Age Doctor'  height=\"685\" width=\"1030\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/neuzeitaerztin.de\/wp-content\/uploads\/2025\/02\/old-hand-7482417_1280-1030x685.jpg 1030w, https:\/\/neuzeitaerztin.de\/wp-content\/uploads\/2025\/02\/old-hand-7482417_1280-300x199.jpg 300w, https:\/\/neuzeitaerztin.de\/wp-content\/uploads\/2025\/02\/old-hand-7482417_1280-768x511.jpg 768w, https:\/\/neuzeitaerztin.de\/wp-content\/uploads\/2025\/02\/old-hand-7482417_1280-705x469.jpg 705w, https:\/\/neuzeitaerztin.de\/wp-content\/uploads\/2025\/02\/old-hand-7482417_1280.jpg 1280w\" sizes=\"(max-width: 1030px) 100vw, 1030px\" \/><\/div><\/div><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m4xc4go4-b979fd41f43df2cd514c640194f69981\">\n#top .av-special-heading.av-m4xc4go4-b979fd41f43df2cd514c640194f69981{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-m4xc4go4-b979fd41f43df2cd514c640194f69981 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-m4xc4go4-b979fd41f43df2cd514c640194f69981 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-m4xc4go4-b979fd41f43df2cd514c640194f69981 av-special-heading-h3 blockquote modern-quote  avia-builder-el-8  el_after_av_image  el_before_av_textblock '><h3 class='av-special-heading-tag '  itemprop=\"headline\"  >Vitamin A deficiency and overdose<\/h3><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n<section  class='av_textblock_section av-m4xc725r-769ba19369c705c43ae079aeb11c6ff9 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p data-pm-slice=\"1 1 []\">A lack of vitamin A can lead to night blindness, increased susceptibility to infections and dry skin. This deficiency is particularly widespread in developing countries. Recent studies have also identified links between vitamin A deficiency and long Covid, particularly in olfactory disorders. Studies suggest that vitamin A may play a role in the regeneration of olfactory mucous membranes.   <\/p>\n<p>At the same time, an overdose due to excessive amounts of retinol (e.g. through dietary supplements or extreme liver consumption) can have a toxic effect and cause health problems. Therefore, the vitamin A level in the blood should be measured before high-dose supplements are taken in order to ensure a safe and needs-based supply<\/p>\n<\/div><\/section>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m4xc4o4h-37fc0d01a397a1ac3cd9b2e922fd5a43\">\n#top .av-special-heading.av-m4xc4o4h-37fc0d01a397a1ac3cd9b2e922fd5a43{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-m4xc4o4h-37fc0d01a397a1ac3cd9b2e922fd5a43 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-m4xc4o4h-37fc0d01a397a1ac3cd9b2e922fd5a43 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-m4xc4o4h-37fc0d01a397a1ac3cd9b2e922fd5a43 av-special-heading-h4 blockquote modern-quote  avia-builder-el-10  el_after_av_textblock  el_before_av_textblock '><h4 class='av-special-heading-tag '  itemprop=\"headline\"  >Scientific findings on vitamin A<\/h4><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n<section  class='av_textblock_section av-i4srcs-d11611d08f49c114e317e4e350a05454 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p data-pm-slice=\"1 3 []\">Several studies confirm the importance of vitamin A for health:<\/p>\n<ul data-spread=\"false\">\n<li>A study in the <strong>American Journal of Clinical Nutrition<\/strong> shows that vitamin A is crucial for the immune defense against viral infections.<\/li>\n<li>Research published in the <strong>Journal of Investigative Dermatology<\/strong> highlights the role of vitamin A in skin health and wound healing.<\/li>\n<li>Recent work has focused on the role of vitamin A in <strong>long Covid<\/strong> and the regeneration of olfactory disorders. Initial findings suggest that targeted vitamin A supplementation could support the recovery of the sense of smell. <\/li>\n<\/ul>\n<p>Sources:<\/p>\n<ul>\n<li data-start=\"132\" data-end=\"614\">\n<p data-start=\"135\" data-end=\"165\"><strong data-start=\"135\" data-end=\"165\">Vitamin A and the immune system:<\/strong><\/p>\n<ul data-start=\"169\" data-end=\"614\">\n<li data-start=\"169\" data-end=\"387\">Stephensen, C. B. (2001). Vitamin A, infection, and immune function. <em data-start=\"240\" data-end=\"272\">Annual Review of Nutrition, 21<\/em>(1), 167-192. DOI: <a target=\"_new\" rel=\"noopener\" data-start=\"291\" data-end=\"387\">10.1146\/annurev.nutr.21.1.167<\/a>  <\/li>\n<li data-start=\"391\" data-end=\"614\">Semba, R. D. (1999). Vitamin A and immunity to viral, bacterial and protozoan infections. <em data-start=\"483\" data-end=\"525\">Proceedings of the Nutrition Society, 58<\/em>(3), 719-727. DOI: <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/10610075\/\" target=\"_new\" rel=\"noopener\" data-start=\"544\" data-end=\"614\">10.1017\/S0029665199000944<\/a>  <\/li>\n<\/ul>\n<\/li>\n<li data-start=\"616\" data-end=\"1127\">\n<p data-start=\"619\" data-end=\"652\"><strong data-start=\"619\" data-end=\"652\">Vitamin A and skin health:<\/strong><\/p>\n<ul data-start=\"656\" data-end=\"1127\">\n<li data-start=\"656\" data-end=\"866\">Ross, A. C. (2012). Vitamin A and retinoic acid in skin health and disease. <em data-start=\"734\" data-end=\"781\">The Journal of Investigative Dermatology, 132<\/em>(3), 713-725. DOI: <a href=\"https:\/\/www.nature.com\/articles\/jid2011405\" target=\"_new\" rel=\"noopener\" data-start=\"800\" data-end=\"866\">10.1038\/jid.2011.405<\/a>  <\/li>\n<li data-start=\"870\" data-end=\"1127\">Kang, S., &#038; Krueger, G. G. (2002). Mechanisms of action of topical retinoids in the treatment of photoaging. <em data-start=\"981\" data-end=\"1007\">Dermatologic Clinics, 18<\/em>(1), 1-17. DOI: <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S073386350300057X\" target=\"_new\" rel=\"noopener\" data-start=\"1023\" data-end=\"1127\">10.1016\/s0733-8635(03)00057-x<\/a> <\/li>\n<\/ul>\n<\/li>\n<li data-start=\"1129\" data-end=\"1786\">\n<p data-start=\"1132\" data-end=\"1176\"><strong data-start=\"1132\" data-end=\"1176\">Vitamin A and Long Covid\/smell disorders:<\/strong><\/p>\n<ul data-start=\"1180\" data-end=\"1786\">\n<li data-start=\"1180\" data-end=\"1519\">Hopkins, C., Surda, P., &#038; Kumar, N. (2021). Does vitamin A treatment improve the recovery of olfactory function in post-viral anosmia? <em data-start=\"1317\" data-end=\"1340\">Rhinology Journal, 59<\/em>(3), 226-234. DOI: <a target=\"_new\" rel=\"noopener\" data-start=\"1359\" data-end=\"1519\">10.4193\/Rhin20.573<\/a>  <\/li>\n<li data-start=\"1523\" data-end=\"1786\">Lechien, J. R., &#038; Hopkins, C. (2022). Role of vitamin A in olfactory dysfunction due to viral infections including COVID-19. <em data-start=\"1650\" data-end=\"1677\">Frontiers in Nutrition, 9<\/em>, 785905. DOI: <a target=\"_new\" rel=\"noopener\" data-start=\"1692\" data-end=\"1786\">10.3389\/fnut.2022.785905<\/a>  <\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div><\/section>\n\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m4xc6kfr-3d7cdb9aa0fd8ea485138d6f402c2de8\">\n#top .av-special-heading.av-m4xc6kfr-3d7cdb9aa0fd8ea485138d6f402c2de8{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-m4xc6kfr-3d7cdb9aa0fd8ea485138d6f402c2de8 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-m4xc6kfr-3d7cdb9aa0fd8ea485138d6f402c2de8 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-m4xc6kfr-3d7cdb9aa0fd8ea485138d6f402c2de8 av-special-heading-h4 blockquote modern-quote  avia-builder-el-13  el_after_av_image  el_before_av_textblock '><h4 class='av-special-heading-tag '  itemprop=\"headline\"  >Conclusion<\/h4><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n<section  class='av_textblock_section av-431vto-8ec86d381b77639c969c83e24319e1d1 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p data-pm-slice=\"1 1 []\">Vitamin A is an essential nutrient that should not be missing from a balanced diet. You can actively support your health by consciously consuming vitamin-rich foods. If you are unsure whether your intake is sufficient, individual nutritional advice can be helpful.  <\/p>\n<p>Do you have questions about optimal nutrient supply? Please feel free to make an appointment in my practice!<\/p>\n<\/div><\/section>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":1877,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-1873","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Vitamin A \u00bb Health blog \u25b7 Neuzeit\u00e4rztin<\/title>\n<meta name=\"description\" content=\"Vitamin A in the Neuzeit\u00e4rztin health blog. \u2705Holistic medicine \u2705Health blog \u2705New-age doctor \ud83d\udccdNew-age doctor in Potsdam\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link 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