{"id":10176,"date":"2025-06-22T14:54:34","date_gmt":"2025-06-22T12:54:34","guid":{"rendered":"https:\/\/mariolab.hr\/vitamin-a-the-most-important-vitamin-for-eye-health\/"},"modified":"2025-06-22T16:29:06","modified_gmt":"2025-06-22T14:29:06","slug":"vitamin-a-the-most-important-vitamin-for-eye-health","status":"publish","type":"post","link":"https:\/\/mariolab.hr\/en\/vitamin-a-the-most-important-vitamin-for-eye-health\/","title":{"rendered":"Vitamin A \u2013 The most important vitamin for eye health"},"content":{"rendered":"\n          \n\n          <figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\">\n            <div class=\"wp-block-embed__wrapper\">\n<div class=\"wpbf-responsive-embed\"><iframe title=\"Zdravlje o\u010diju: Ovaj vitamin je klju\u010dan za dobar vid!\" width=\"1200\" height=\"675\" src=\"https:\/\/www.youtube.com\/embed\/c4GmMoKypGY?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<\/div>\n          <\/figure>\n          \n\n        \n\n<p>The health of our eyes depends on many factors, but one vitamin stands out as the most important \u2013 <strong>vitamin A<\/strong>. Its role in preserving vision, skin, immunity and many other bodily functions is irreplaceable. In this article, you will find out everything you need to know about vitamin A: how it works, what the symptoms of deficiency are, how much it should be consumed, in which foods we find it, and how to use it to treat or prevent problems such as night blindness, cataracts, and dry eye.  <\/p>\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n<h2 class=\"wp-block-heading\">What is Vitamin A?<\/h2>\n\n<p>Vitamin A is <strong>fat-soluble<\/strong> and belongs to the group of essential nutrients that are necessary for the proper functioning of the body. It exists in two main forms: <\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Retinol (active form)<\/strong> \u2013 comes from animal sources (e.g. liver, eggs, butter)<\/li>\n\n\n\n<li><strong>Beta-carotene (provitamin A)<\/strong> \u2013 comes from plant sources (e.g. carrots, sweet potatoes, dark green leafy vegetables)<\/li>\n<\/ul>\n\n<p>The body converts beta-carotene into retinol as needed, which means that it is impossible to overdose on vitamin A through plant-based foods.<\/p>\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n<h2 class=\"wp-block-heading\">Health benefits of vitamin A<\/h2>\n\n<h3 class=\"wp-block-heading\">1. <strong>Eye health and prevention of eye diseases<\/strong><\/h3>\n\n<p>Vitamin A is essential for:<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Adaptation of the eye to the dark<\/strong> \u2013 protects against <strong>night blindness<\/strong><\/li>\n\n\n\n<li>Maintaining <strong>the health of the cornea and retina<\/strong><\/li>\n\n\n\n<li>Prevention of <strong>xerophthalmia<\/strong> (dryness of the eye and damage to the cornea)<\/li>\n\n\n\n<li>Prevention <strong>of macular degeneration<\/strong> and <strong>cataracts<\/strong><\/li>\n\n\n\n<li>Support in <strong>glaucoma<\/strong> and <strong>conjunctivitis<\/strong><\/li>\n<\/ul>\n\n<p>Without enough vitamin A, our eyes lose their ability to focus, especially in the dark, and the risk of infections and permanent visual impairment increases.<\/p>\n\n<h3 class=\"wp-block-heading\">2. <strong>Immunity and defense against infections<\/strong><\/h3>\n\n<p>Vitamin A strengthens the mucous membranes of the mouth, throat, intestines and urinary tract. When a pathogen crosses the body&#8217;s barriers, vitamin A activates defense mechanisms and stimulates the formation <strong>of white blood cells<\/strong>, protecting us from viruses, bacteria and fungi. <\/p>\n\n<h3 class=\"wp-block-heading\">3. <strong>Skin health<\/strong><\/h3>\n\n<ul class=\"wp-block-list\">\n<li>Regulates sebum production<\/li>\n\n\n\n<li>Helps with <strong>acne<\/strong>, <strong>eczema<\/strong>, <strong>psoriasis<\/strong><\/li>\n\n\n\n<li>Keeps skin smooth, moisturized &amp; wrinkle-free<\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\">4. <strong>Bone and dental health<\/strong><\/h3>\n\n<ul class=\"wp-block-list\">\n<li>Participates in <strong>calcium metabolism<\/strong> and <strong>the formation of teeth and bones<\/strong><\/li>\n\n\n\n<li>Helps prevent <strong>osteoporosis<\/strong><\/li>\n\n\n\n<li>Supports growth and development during pregnancy and childhood<\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\">5. <strong>Cancer prevention<\/strong><\/h3>\n\n<p>Vitamin A acts as a powerful <strong>antioxidant<\/strong>, especially in the form of beta-carotene. Studies have shown that regular intake of vitamin A can reduce the risk of: <\/p>\n\n<ul class=\"wp-block-list\">\n<li>Breast Cancer<\/li>\n\n\n\n<li>Lung cancer<\/li>\n\n\n\n<li>Prostate cancer<\/li>\n\n\n\n<li>Skin Cancer<\/li>\n<\/ul>\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n<h2 class=\"wp-block-heading\">Symptoms of vitamin A deficiency<\/h2>\n\n<p>If your diet is deficient in vitamin A, you may notice the following symptoms:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Night blindness<\/li>\n\n\n\n<li>Dry and tired eyes<\/li>\n\n\n\n<li>Frequent conjunctivitis<\/li>\n\n\n\n<li>Dry, cracked skin<\/li>\n\n\n\n<li>Reduced resistance to infections<\/li>\n\n\n\n<li>Acne, dermatitis<\/li>\n\n\n\n<li>Poor growth of hair and nails<\/li>\n\n\n\n<li>Corneal ulcers (in severe cases)<\/li>\n\n\n\n<li>Dryness of mucous membranes and breathing problems<\/li>\n<\/ul>\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n<h2 class=\"wp-block-heading\">Recommended daily doses<\/h2>\n\n<ul class=\"wp-block-list\">\n<li><strong>Adults<\/strong>: 15,000 IU per day (maintenance)<\/li>\n\n\n\n<li><strong>Therapy<\/strong>: 25,000 IU per day (maximum 30 days)<\/li>\n\n\n\n<li><strong>Children and pregnant women<\/strong>: as recommended by a doctor<\/li>\n<\/ul>\n\n<p>It is important not to take excessive doses for long periods of time without professional supervision, as vitamin A is stored in the liver.<\/p>\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n<h2 class=\"wp-block-heading\">The best sources of vitamin A<\/h2>\n\n<h3 class=\"wp-block-heading\">Animal sources (retinol)<\/h3>\n\n<ul class=\"wp-block-list\">\n<li>Beef liver<\/li>\n\n\n\n<li>Chicken liver<\/li>\n\n\n\n<li>Eggs<\/li>\n\n\n\n<li>Butter<\/li>\n\n\n\n<li>Full-fat cheese<\/li>\n\n\n\n<li>Fish oil<\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\">Plant sources (beta-carotene)<\/h3>\n\n<ul class=\"wp-block-list\">\n<li>Carrot<\/li>\n\n\n\n<li>Sweet potato<\/li>\n\n\n\n<li>Pumpkin<\/li>\n\n\n\n<li>Kale<\/li>\n\n\n\n<li>Spinach<\/li>\n\n\n\n<li>Swiss chard<\/li>\n\n\n\n<li>Apricot<\/li>\n\n\n\n<li>Mango<\/li>\n<\/ul>\n\n<p>Tip: Beta-carotene is better absorbed with the addition of fats, e.g. olive oil. <\/p>\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n<h2 class=\"wp-block-heading\">Dietary supplements for eye health<\/h2>\n\n<p>For anyone who has vision problems or wants to additionally protect their eyes, a combination of the following is recommended:<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Vitamin A<\/strong> \u2013 15,000 IU<\/li>\n\n\n\n<li><strong>Lutein and zeaxanthin<\/strong> \u2013 25 mg per day<\/li>\n\n\n\n<li><strong>Vitamin C<\/strong> \u2013 2000\u20136000 mg per day<\/li>\n\n\n\n<li><strong>Vitamin E<\/strong> \u2013 400 IU per day<\/li>\n\n\n\n<li><strong>Blackcurrant extract<\/strong> \u2013 300\u2013500 mg per day<\/li>\n\n\n\n<li><strong>Astaxanthin<\/strong> \u2013 4\u201312 mg per day<\/li>\n<\/ul>\n\n<p>This combination protects the retina, improves circulation in the eyes, reduces oxidative stress and preserves good vision.<\/p>\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n<h2 class=\"wp-block-heading\">For whom is vitamin A especially important?<\/h2>\n\n<ul class=\"wp-block-list\">\n<li>People <strong>who work on a computer<\/strong> or are frequently exposed <strong>to blue light<\/strong><\/li>\n\n\n\n<li>Elderly (risk of macular degeneration)<\/li>\n\n\n\n<li>Diabetics<\/li>\n\n\n\n<li>People who have dry eyes, redness, inflammation<\/li>\n\n\n\n<li>Pregnant and lactating women (under medical supervision)<\/li>\n\n\n\n<li>Athletes and recreational athletes (due to the increased need for antioxidants)<\/li>\n<\/ul>\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n<h2 class=\"wp-block-heading\">Possible side effects (in case of overdose)<\/h2>\n\n<p>With excessive intake of vitamin A, the following may occur:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Headache<\/li>\n\n\n\n<li>Nausea<\/li>\n\n\n\n<li>Dry skin and hair<\/li>\n\n\n\n<li>Hepatic impairment (at very high doses)<\/li>\n\n\n\n<li>Changes in vision<\/li>\n<\/ul>\n\n<p>That is why therapeutic doses are used for a maximum of 30 days, and then they move on to maintenance.<\/p>\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n<p>Vitamin A is indispensable for the health of our eyes, skin, immunity and many internal organs. Its deficiency leads to serious vision disorders and general health, while regular consumption in recommended doses can prevent a wide range of diseases, from night blindness to degenerative changes in the eyes. <\/p>\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n<h2 class=\"wp-block-heading\">Do you want to treat your eyes and body naturally?<\/h2>\n\n<p>For personal advice, contact <strong>MarioLab natural healing practice<\/strong>:<\/p>\n\n<p>\ud83d\udcde Phone \/ Viber \/ WhatsApp: <strong>+385 98 9179 200<\/strong><br\/>\ud83c\udf10 Website: <a class=\"\" href=\"https:\/\/mariolab.hr\/en\/\">mariolab.hr<\/a><br\/>\ud83d\udce9 E-mail: <a>info@mariolab.hr<\/a><\/p>\n\n<p>\ud83d\udcda See also our books on health and natural healing:<br\/>\ud83d\udc49 <a>Books available here<\/a><\/p>\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n<p>If you want more educational content about natural remedies and health, subscribe to our <strong>YouTube channel marioLAB:<\/strong><br\/>\ud83c\udfa5 <a class=\"\" href=\"https:\/\/www.youtube.com\/@marioLAB\">youtube.com\/@marioLAB<\/a><\/p>\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n","protected":false},"excerpt":{"rendered":"<p>The health of our eyes depends on many factors, but one vitamin stands out as the most important \u2013 vitamin A. Its role in preserving vision, skin, immunity and many other bodily functions is irreplaceable. In this article, you will find out everything you need to know about vitamin A: how it works, what the [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":10164,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","footnotes":""},"categories":[1138],"tags":[1278,1162,1189],"class_list":["post-10176","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vitamins-and-minerals","tag-bags-under-the-eyes","tag-natural-medicine","tag-vitamin-en","wpbf-post"],"_links":{"self":[{"href":"https:\/\/mariolab.hr\/en\/wp-json\/wp\/v2\/posts\/10176","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mariolab.hr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mariolab.hr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mariolab.hr\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/mariolab.hr\/en\/wp-json\/wp\/v2\/comments?post=10176"}],"version-history":[{"count":0,"href":"https:\/\/mariolab.hr\/en\/wp-json\/wp\/v2\/posts\/10176\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mariolab.hr\/en\/wp-json\/wp\/v2\/media\/10164"}],"wp:attachment":[{"href":"https:\/\/mariolab.hr\/en\/wp-json\/wp\/v2\/media?parent=10176"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mariolab.hr\/en\/wp-json\/wp\/v2\/categories?post=10176"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mariolab.hr\/en\/wp-json\/wp\/v2\/tags?post=10176"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}