{"id":12994,"date":"2022-11-03T04:05:33","date_gmt":"2022-11-03T09:05:33","guid":{"rendered":"https:\/\/gncholdings.wpengine.com\/learn\/beauty\/vitamin-d-deficiency-how-can-you-tell-if-you-have-one\/"},"modified":"2026-03-13T09:40:33","modified_gmt":"2026-03-13T14:40:33","slug":"signs-of-vitamin-d-deficiency","status":"publish","type":"post","link":"https:\/\/www.gnc.com\/learn\/vitamins-minerals\/signs-of-vitamin-d-deficiency.html","title":{"rendered":"Vitamin D Deficiency\u2014How Can You Tell If You Have One?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"12994\" class=\"elementor elementor-12994\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-202bb47 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"202bb47\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-76048ad\" data-id=\"76048ad\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2c202b4 elementor-widget elementor-widget-heading\" data-id=\"2c202b4\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.21.0 - 30-04-2024 *\/\n.elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}<\/style><h2 class=\"elementor-heading-title elementor-size-default\">The Importance Of Vitamin D<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-2168444 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2168444\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-159067c\" data-id=\"159067c\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-227fd6f elementor-widget elementor-widget-text-editor\" data-id=\"227fd6f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.21.0 - 30-04-2024 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#69727d;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#69727d;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p>Vitamin D is a fat-soluble vitamin that is probably most well-known for 2 things: 1) it\u2019s important for bone health and 2) it\u2019s sometimes referred to as the sunshine vitamin because our body (our skin to be more specific) produces it with exposure to sunlight. Vitamin D is important in the body for MANY more reasons than just bone health.<\/p><p>There are receptors for vitamin D in nearly every type of tissue and cell in the body including our brain, heart, stomach, pancreas, skin and immune system. In addition to its role in bone health, vitamin D also reduces inflammation, regulates cell growth, regulates immune function and also regulates glucose metabolism<sup><a title=\"2\" href=\"https:\/\/ods.od.nih.gov\/factsheets\/VitaminD-HealthProfessional\/\" target=\"_blank\" rel=\"noopener\">2<\/a><\/sup>\u2014and that\u2019s just scratching the surface.<\/p><p>Being that vitamin D\u2019s functions are so broad, it\u2019s not surprising that vitamin D deficiency is associated with many health conditions including certain types of cancer, cardiovascular disease, diabetes, autoimmune diseases, and respiratory tract infections. Please note that these associations do not necessarily mean that vitamin D deficiency causes these conditions, it could also be that these conditions cause a vitamin D deficiency.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b38d203 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b38d203\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6d07a2d\" data-id=\"6d07a2d\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-bd0eecc elementor-widget elementor-widget-text-editor\" data-id=\"bd0eecc\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><strong>Related Reading<\/strong>: <a href=\"https:\/\/www.gnc.com\/learn\/wellness\/can-you-take-vitamin-c-and-vitamin-d-together.html\">CAN YOU TAKE VITAMIN C AND VITAMIN D TOGETHER?<\/a><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1b3f42f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1b3f42f\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-ebcba7e\" data-id=\"ebcba7e\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-71218c8 elementor-widget elementor-widget-heading\" data-id=\"71218c8\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Vitamin D Testing<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-244a58f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"244a58f\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6cc66e6\" data-id=\"6cc66e6\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4e8c3e9 elementor-widget elementor-widget-text-editor\" data-id=\"4e8c3e9\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>The only way to know for sure if you are vitamin D deficient is for your doctor to order a blood test. Most expert groups recommend a specific test called a \u201cserum circulating 25-hydroxyvitamin D level\u201d. If your doctor orders a test, here\u2019s what you should focus on:<\/p><ul><li>Optimal levels of vitamin D appear to be in the range of 30-100ng\/mL, but there is not a consensus in the scientific community on this point.<\/li><li>The Endocrine Society Clinical Practice Guidelines divide vitamin D levels into categories of deficiency (25-hydroxyvitamin D level less than 20 ng\/mL (50 nmol\/L)) and insufficiency\/inadequacy (25-hydroxyvitamin D level 21-29ng\/mL (525-725 nmol\/L)).<\/li><\/ul><p>The distinction between a vitamin D deficiency and a vitamin D insufficiency is important. A vitamin D deficiency can result in overt symptoms like bone and muscle weakness and cause reduced bone mineral density.<sup><a title=\"5\" href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC3356951\/\" target=\"_blank\" rel=\"noopener\">5<\/a><\/sup> Vitamin D insufficiency may cause more general symptoms like tiredness or fatigue, reduced immune function, impaired focus or impaired mood.<sup><a title=\"6\" href=\"https:\/\/lpi.oregonstate.edu\/mic\/micronutrient-inadequacies\/overview\" target=\"_blank\" rel=\"noopener\">6<\/a><\/sup> If you\u2019re wondering what the likelihood is that you are vitamin D deficient, more recent estimates of how many people in the United States are vitamin D deficient show that around 6% of the population is probably deficient and about 24% have inadequate vitamin D status.<sup><a title=\"7\" href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/31069443\/\" target=\"_blank\" rel=\"noopener\">7<\/a><\/sup> But, some researchers estimate go as far as to say that 40-100% of the U.S. population is vitamin D deficient<sup><a title=\"8\" href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/17634462\/\" target=\"_blank\" rel=\"noopener\">8<\/a><\/sup>\u2014so, it&#8217;s plain to see that the verdict is still out on exactly how common this problem is and what to do about it.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-51c8832 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"51c8832\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-a3d12aa\" data-id=\"a3d12aa\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5b7bf20 elementor-widget elementor-widget-heading\" data-id=\"5b7bf20\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How Do I Know If I Should Ask For A Vitamin D Test?<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-10ec01f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"10ec01f\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-9e4bb8a\" data-id=\"9e4bb8a\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b15d0c5 elementor-widget elementor-widget-text-editor\" data-id=\"b15d0c5\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>While the scientists figure it out, you may be thinking about asking your doctor about your vitamin D status. What are some signs of a vitamin D deficiency\u2014or insufficiency? Here are a few things to watch out for:<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3ed648e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3ed648e\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-9cf67fe\" data-id=\"9cf67fe\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-546dff5 elementor-widget elementor-widget-heading\" data-id=\"546dff5\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">1. Fatigue<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7b250bc elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7b250bc\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-96abecd\" data-id=\"96abecd\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a51d2ac elementor-widget elementor-widget-text-editor\" data-id=\"a51d2ac\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>In general, most nutrient deficiencies can lead to fatigue. Specific to vitamin D, there is research to suggest that vitamin D is inversely related to fatigue severity, which means that some studies have found that people with lower vitamin D levels report greater levels of fatigue.<sup><a title=\"9\" href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC6836014\/\" target=\"_blank\" rel=\"noopener\">9<\/a>, <a title=\"10\" href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC5207540\/\" target=\"_blank\" rel=\"noopener\">10<\/a><\/sup><\/p><p>Remember, anytime you have unexpected or unexplained fatigue, it should prompt a conversation with your doctor to make sure that everything is okay in there!<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5fba0c6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5fba0c6\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6b64101\" data-id=\"6b64101\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-46ede05 elementor-widget elementor-widget-heading\" data-id=\"46ede05\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2. Feeling Run Down Often?<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6a3f922 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6a3f922\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6bb166c\" data-id=\"6bb166c\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3414c45 elementor-widget elementor-widget-text-editor\" data-id=\"3414c45\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>We\u2019ve already talked about how important vitamin D is for immune health, but we can take it a step further and say that vitamin D is crucial for two really important facets of the immune response\u2014the innate and adaptive.<sup><a title=\"11\" href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/22935474\/\" target=\"_blank\" rel=\"noopener\">11<\/a><\/sup> A 2013 systematic review and meta-analysis found that vitamin D supplementation appeared to have a protective effect on respiratory tract infections.<sup><a title=\"12\" href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC3686844\/\" target=\"_blank\" rel=\"noopener\">12<\/a><\/sup> There are also associations found between vitamin D deficiency and upper respiratory tract infections.<sup><a title=\"13\" href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC3447082\/\" target=\"_blank\" rel=\"noopener\">13<\/a><\/sup><\/p><p>If you\u2019re feeling so fatigued that even binge watching your latest Netflix addiction feels like too much effort, you might consider checking your vitamin D levels to see if you could use a little support in the sunshine vitamin department.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d00d255 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d00d255\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-984c1e0\" data-id=\"984c1e0\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d53083c elementor-widget elementor-widget-heading\" data-id=\"d53083c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">3. Muscle Pain, Weakness Or Slow Recovery After Workouts<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4efe6cd elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4efe6cd\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-d9121d2\" data-id=\"d9121d2\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a1a7f0c elementor-widget elementor-widget-text-editor\" data-id=\"a1a7f0c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Vitamin D is also important for muscle function (add it to the list of the things vitamin D does), and insufficiency or deficiency can lead to declining muscle mass and strength. These effects are especially prominent in older individuals.<sup><a title=\"14\" href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/25033068\/\" target=\"_blank\" rel=\"noopener\">14<\/a>, <a title=\"15\" href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC3248226\/\" target=\"_blank\" rel=\"noopener\">15<\/a><\/sup><\/p><p>Apart from older individuals, research in elite athletes has shown that lower vitamin D levels were associated with lower extremity muscle strains and injuries to muscles of the core.<sup><a title=\"16\" href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/29275983\/\" target=\"_blank\" rel=\"noopener\">16<\/a><\/sup> Vitamin D supplements were also shown to have a positive effect on muscle function and risk for injury.<sup><a title=\"17\" href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC7144051\/\" target=\"_blank\" rel=\"noopener\">17<\/a><\/sup><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-91c4bb8 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"91c4bb8\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2704659\" data-id=\"2704659\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-bd93172 elementor-widget elementor-widget-heading\" data-id=\"bd93172\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">4. Depression Or Cognitive Changes<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-0023dd3 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"0023dd3\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-41b1a22\" data-id=\"41b1a22\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7e587ab elementor-widget elementor-widget-text-editor\" data-id=\"7e587ab\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Vitamin D deficiency and insufficiency have been linked to cognitive decline in elderly people<sup><a title=\"18\" href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC4053858\/\" target=\"_blank\" rel=\"noopener\">18<\/a><\/sup> and also risk for depression.<sup><a title=\"19\" href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/23636546\/\" target=\"_blank\" rel=\"noopener\">19<\/a><\/sup><\/p><p>Like many of the potential signs of a vitamin D deficiency, depression or cognitive changes should always prompt a convo with your doctor. It&#8217;s important to keep the lines of communication open with a trusted medical provider, as it&#8217;s always better to identify a potential issue before things progress!<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d7e55f7 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d7e55f7\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-48d8802\" data-id=\"48d8802\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5e3ba2b elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"5e3ba2b\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.21.0 - 30-04-2024 *\/\n.elementor-widget-divider{--divider-border-style:none;--divider-border-width:1px;--divider-color:#0c0d0e;--divider-icon-size:20px;--divider-element-spacing:10px;--divider-pattern-height:24px;--divider-pattern-size:20px;--divider-pattern-url:none;--divider-pattern-repeat:repeat-x}.elementor-widget-divider .elementor-divider{display:flex}.elementor-widget-divider .elementor-divider__text{font-size:15px;line-height:1;max-width:95%}.elementor-widget-divider .elementor-divider__element{margin:0 var(--divider-element-spacing);flex-shrink:0}.elementor-widget-divider .elementor-icon{font-size:var(--divider-icon-size)}.elementor-widget-divider .elementor-divider-separator{display:flex;margin:0;direction:ltr}.elementor-widget-divider--view-line_icon 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.elementor-divider__element{margin-inline-end:0}.elementor-widget-divider:not(.elementor-widget-divider--view-line_text):not(.elementor-widget-divider--view-line_icon) .elementor-divider-separator{border-block-start:var(--divider-border-width) var(--divider-border-style) var(--divider-color)}.elementor-widget-divider--separator-type-pattern{--divider-border-style:none}.elementor-widget-divider--separator-type-pattern.elementor-widget-divider--view-line .elementor-divider-separator,.elementor-widget-divider--separator-type-pattern:not(.elementor-widget-divider--view-line) .elementor-divider-separator:after,.elementor-widget-divider--separator-type-pattern:not(.elementor-widget-divider--view-line) .elementor-divider-separator:before,.elementor-widget-divider--separator-type-pattern:not([class*=elementor-widget-divider--view]) .elementor-divider-separator{width:100%;min-height:var(--divider-pattern-height);-webkit-mask-size:var(--divider-pattern-size) 100%;mask-size:var(--divider-pattern-size) 100%;-webkit-mask-repeat:var(--divider-pattern-repeat);mask-repeat:var(--divider-pattern-repeat);background-color:var(--divider-color);-webkit-mask-image:var(--divider-pattern-url);mask-image:var(--divider-pattern-url)}.elementor-widget-divider--no-spacing{--divider-pattern-size:auto}.elementor-widget-divider--bg-round{--divider-pattern-repeat:round}.rtl .elementor-widget-divider .elementor-divider__text{direction:rtl}.e-con-inner>.elementor-widget-divider,.e-con>.elementor-widget-divider{width:var(--container-widget-width,100%);--flex-grow:var(--container-widget-flex-grow)}<\/style>\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-99a3a46 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"99a3a46\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-68d3d065\" data-id=\"68d3d065\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-31317556 elementor-widget elementor-widget-text-editor\" data-id=\"31317556\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>After your vitamin D test, your doctor may recommend a <a href=\"https:\/\/www.gnc.com\/vitamins-a-z\/vitamin-d\/\">vitamin D supplement<\/a> to help get your vitamin D status on the right track. Also, remember that just getting more sun exposure can help you to improve your levels. If you do have a deficiency, it\u2019s pretty easy to fix and the health benefits are worth it!<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Vitamin D impacts nearly every body system and so many markers of health. How can you make sure that you don\u2019t have a vitamin D deficiency? Read on to learn more.<\/p>\n","protected":false},"author":30,"featured_media":21111,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"site-sidebar-layout":"default","site-content-layout":"default","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":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-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-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-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-gradient":""}},"ast-content-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-gradient":""},"tablet":{"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-gradient":""},"mobile":{"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-gradient":""}},"footnotes":""},"categories":[2190,2188],"tags":[1855],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Vitamin D Deficiency\u2014How Can You Tell If You Have One? | GNC<\/title>\n<meta name=\"description\" content=\"Do you have a vitamin D deficiency? 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