{"id":209193,"date":"2026-02-04T09:17:00","date_gmt":"2026-02-04T08:17:00","guid":{"rendered":"https:\/\/www.parisselectbook.com\/2026\/02\/04\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\/"},"modified":"2026-02-04T09:17:00","modified_gmt":"2026-02-04T08:17:00","slug":"grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance","status":"publish","type":"post","link":"https:\/\/www.parisselectbook.com\/en\/2026\/02\/04\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\/","title":{"rendered":"Grey hair before the age of 30: a little-known nutritional deficiency promotes its appearance"},"content":{"rendered":"<p>Seeing your temples lighten can be surprising. When you notice grey <a href=\"https:\/\/www.parisselectbook.com\/en\/2026\/02\/01\/hair-loss-an-ancestral-chinese-plant-can-stop-it-according-to-a-new-study\/\" target=\"_blank\" rel=\"noopener\">hair<\/a> before the age of 30, doubt sets in and the questions start flying. <\/p>\n<h2>What science knows about premature graying<\/h2>\n<p>Hair <a href=\"https:\/\/www.parisselectbook.com\/en\/2026\/01\/30\/black-jeans-8-simple-steps-to-preserve-color-and-prevent-fading\/\" target=\"_blank\" rel=\"noopener\">color<\/a> depends on melanocytes. They manufacture melanin along the follicle. Yet this system can be exhausted early on, with gray hair appearing before the age of 30.  <\/p>\n<p>Nutritional deficiencies may play a role. The copper <a href=\"https:\/\/www.parisselectbook.com\/en\/2025\/11\/22\/kate-middleton-sets-the-fall-2025-hair-trend-copper-highlights-that-warm-up-the-complexion\/\" target=\"_blank\" rel=\"noopener\"><strong>copper<\/strong><\/a> is intriguing, as this micronutrient activates <strong>tyrosinase<\/strong>. Thus, a prolonged deficiency may favor more rapid graying.  <\/p>\n<p>Dermatologists also mention <strong>vitamin B12<\/strong>, <strong>iron<\/strong>, <strong>folate<\/strong> and <strong>vitamin D<\/strong>. In addition, smoking, oxidative stress and certain thyroid <a href=\"https:\/\/www.parisselectbook.com\/en\/2025\/10\/28\/garden-in-autumn-whitewash-trunks-to-protect-trees-and-prevent-disease\/\" target=\"_blank\" rel=\"noopener\">diseases<\/a> can accelerate the process. A recent article focuses on the nutritional aspect.  <\/p>\n<blockquote><p>&#8220;Seeing its first silver threads appear is not a failure, but a signal to listen to.&#8221;<\/p><\/blockquote>\n<h3>Signals to alert without panicking<\/h3>\n<p>A sudden change, with several strands in a short space of time, should give pause for thought. For anyone with gray hair before the age of 30, we also monitor fatigue and tingling. <\/p>\n<p>When in doubt, a simple check-up can help. It often includes <strong>B12<\/strong>, <strong>ferritin<\/strong>, <strong>iron<\/strong>, <strong>copper<\/strong>, <strong>vitamin D<\/strong> and <strong>TSH<\/strong>, so that a correctable deficiency can be identified. As a result, management becomes more precise.  <\/p>\n<ul>\n<li>Genetics weighs heavily, but doesn&#8217;t explain everything.<\/li>\n<li><strong>Copper<\/strong> is involved in pigmentation via <strong>tyrosinase<\/strong>.<\/li>\n<li>Some deficiencies can be corrected with medical follow-up.<\/li>\n<li>Smoking and stress accelerate graying.<\/li>\n<li>Gentle care limits breakage and yellowing.<\/li>\n<\/ul>\n<h2>What recent studies show<\/h2>\n<p>In <strong>2013<\/strong>, a clinical study found lower serum <strong>copper<\/strong> levels in affected subjects. This strengthened the link with trace elements. The observation often concerned people with gray hair before the age of 30.  <\/p>\n<p>Small-scale studies have also suggested a role for <strong>iron<\/strong>, <strong>calcium<\/strong> and <strong>zinc<\/strong>. However, these studies do not prove a causal link. What&#8217;s more, other cohorts have not found the same discrepancies.  <\/p>\n<p>Individual variability remains high. Clinicians now evaluate the overall terrain before reaching any conclusions. In short, nutrition counts, but so do genetics and biological age.  <\/p>\n<h3>Action on the plate and healthy living<\/h3>\n<p>On the food front, aiming for balance pays off for the fiber. For example, <strong>copper<\/strong> and <strong>B12<\/strong> are recommended for gray hair before the age of 30. Vegetarian and vegan diets benefit from the inclusion of fortified foods.  <\/p>\n<p>Also, limiting smoking reduces oxidative stress and protects the follicle. Good sleep and stress management support cell regeneration. As a result, these simple gestures reinforce the effects of any treatment.  <\/p>\n<h2>Hair care: preserve, camouflage or assume<\/h2>\n<p>On the care side, a purple shampoo neutralizes yellow highlights and revives shine. Nowadays, formulas with antioxidants, ceramides or proteins help the fiber. For those who discover gray hair before the age of 30, gentle gestures limit breakage.  <\/p>\n<p>Color remains an option, from gloss to tone-on-tone. However, it&#8217;s best to test a strand and space out aggressive techniques. That way, you protect your scalp and keep your hair shiny.  <\/p>\n<p>Many choose to take on silver highlights, inspired by public figures. Consequently, professional guidance can help structure the cut and contrast. In short, the aim is to feel good, even when gray hair under 30 makes an appearance.  <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Seeing your temples lighten can be surprising. When you notice grey hair before the age of 30, doubt sets in and the questions start flying&#8230;.<\/p>\n","protected":false},"author":13,"featured_media":209137,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[2685],"tags":[5760],"quartier":[],"class_list":["post-209193","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news-du-luxe-en","tag-gray-hair-before-age-30"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Grey hair before the age of 30: a little-known nutritional deficiency promotes its appearance<\/title>\n<meta name=\"description\" content=\"gray hair before age 30 Copper or B12 deficiency can be a problem. A simple check-up can identify correctable deficiencies.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.parisselectbook.com\/en\/2026\/02\/04\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Grey hair before the age of 30: a little-known nutritional deficiency promotes its appearance\" \/>\n<meta property=\"og:description\" content=\"gray hair before age 30 Copper or B12 deficiency can be a problem. A simple check-up can identify correctable deficiencies.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.parisselectbook.com\/en\/2026\/02\/04\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\/\" \/>\n<meta property=\"og:site_name\" content=\"Paris Select\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/parisselect\" \/>\n<meta property=\"article:published_time\" content=\"2026-02-04T08:17:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.parisselectbook.com\/wp-content\/uploads\/2026\/02\/Cheveux-gris-avant-30-ans-une-carence-nutritionnelle-meconnue-favorise-leur-apparition.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"zaccharie touboul\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"zaccharie touboul\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.parisselectbook.com\\\/en\\\/2026\\\/02\\\/04\\\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.parisselectbook.com\\\/en\\\/2026\\\/02\\\/04\\\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\\\/\"},\"author\":{\"name\":\"zaccharie touboul\",\"@id\":\"https:\\\/\\\/www.parisselectbook.com\\\/en\\\/#\\\/schema\\\/person\\\/3675d9a80d6cbefbfde597e393c036aa\"},\"headline\":\"Grey hair before the age of 30: a little-known nutritional deficiency promotes its appearance\",\"datePublished\":\"2026-02-04T08:17:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.parisselectbook.com\\\/en\\\/2026\\\/02\\\/04\\\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\\\/\"},\"wordCount\":525,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.parisselectbook.com\\\/en\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.parisselectbook.com\\\/en\\\/2026\\\/02\\\/04\\\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.parisselectbook.com\\\/wp-content\\\/uploads\\\/2026\\\/02\\\/Cheveux-gris-avant-30-ans-une-carence-nutritionnelle-meconnue-favorise-leur-apparition.jpg\",\"keywords\":[\"gray hair before age 30\"],\"articleSection\":[\"News du Luxe\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.parisselectbook.com\\\/en\\\/2026\\\/02\\\/04\\\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.parisselectbook.com\\\/en\\\/2026\\\/02\\\/04\\\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\\\/\",\"url\":\"https:\\\/\\\/www.parisselectbook.com\\\/en\\\/2026\\\/02\\\/04\\\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\\\/\",\"name\":\"Grey hair before the age of 30: a little-known nutritional deficiency promotes its appearance\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.parisselectbook.com\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.parisselectbook.com\\\/en\\\/2026\\\/02\\\/04\\\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.parisselectbook.com\\\/en\\\/2026\\\/02\\\/04\\\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.parisselectbook.com\\\/wp-content\\\/uploads\\\/2026\\\/02\\\/Cheveux-gris-avant-30-ans-une-carence-nutritionnelle-meconnue-favorise-leur-apparition.jpg\",\"datePublished\":\"2026-02-04T08:17:00+00:00\",\"description\":\"gray hair before age 30 Copper or B12 deficiency can be a problem. A simple check-up can identify correctable deficiencies.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.parisselectbook.com\\\/en\\\/2026\\\/02\\\/04\\\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.parisselectbook.com\\\/en\\\/2026\\\/02\\\/04\\\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.parisselectbook.com\\\/en\\\/2026\\\/02\\\/04\\\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.parisselectbook.com\\\/wp-content\\\/uploads\\\/2026\\\/02\\\/Cheveux-gris-avant-30-ans-une-carence-nutritionnelle-meconnue-favorise-leur-apparition.jpg\",\"contentUrl\":\"https:\\\/\\\/www.parisselectbook.com\\\/wp-content\\\/uploads\\\/2026\\\/02\\\/Cheveux-gris-avant-30-ans-une-carence-nutritionnelle-meconnue-favorise-leur-apparition.jpg\",\"width\":1200,\"height\":675,\"caption\":\"Cheveux gris avant 30 ans : une carence nutritionnelle m\u00e9connue favorise leur apparition\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.parisselectbook.com\\\/en\\\/2026\\\/02\\\/04\\\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Que faire \u00e0 Paris ?\",\"item\":\"https:\\\/\\\/www.parisselectbook.com\\\/en\\\/category\\\/que-faire-a-paris-en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Grey hair before the age of 30: a little-known nutritional deficiency promotes its appearance\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.parisselectbook.com\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/www.parisselectbook.com\\\/en\\\/\",\"name\":\"Paris Select Book\",\"description\":\"Le guide chic des Tendances Parisiennes\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.parisselectbook.com\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.parisselectbook.com\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.parisselectbook.com\\\/en\\\/#organization\",\"name\":\"Paris Select\",\"url\":\"https:\\\/\\\/www.parisselectbook.com\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.parisselectbook.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.parisselectbook.com\\\/wp-content\\\/uploads\\\/2024\\\/06\\\/logo-IG-TKTK-LK.png\",\"contentUrl\":\"https:\\\/\\\/www.parisselectbook.com\\\/wp-content\\\/uploads\\\/2024\\\/06\\\/logo-IG-TKTK-LK.png\",\"width\":684,\"height\":665,\"caption\":\"Paris Select\"},\"image\":{\"@id\":\"https:\\\/\\\/www.parisselectbook.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/parisselect\",\"https:\\\/\\\/www.instagram.com\\\/parisselect\\\/\",\"https:\\\/\\\/www.tiktok.com\\\/@parisselect\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.parisselectbook.com\\\/en\\\/#\\\/schema\\\/person\\\/3675d9a80d6cbefbfde597e393c036aa\",\"name\":\"zaccharie touboul\",\"sameAs\":[\"https:\\\/\\\/www.parisselectbook.com\\\/\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Grey hair before the age of 30: a little-known nutritional deficiency promotes its appearance","description":"gray hair before age 30 Copper or B12 deficiency can be a problem. A simple check-up can identify correctable deficiencies.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.parisselectbook.com\/en\/2026\/02\/04\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\/","og_locale":"en_US","og_type":"article","og_title":"Grey hair before the age of 30: a little-known nutritional deficiency promotes its appearance","og_description":"gray hair before age 30 Copper or B12 deficiency can be a problem. A simple check-up can identify correctable deficiencies.","og_url":"https:\/\/www.parisselectbook.com\/en\/2026\/02\/04\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\/","og_site_name":"Paris Select","article_publisher":"https:\/\/www.facebook.com\/parisselect","article_published_time":"2026-02-04T08:17:00+00:00","og_image":[{"width":1200,"height":675,"url":"https:\/\/www.parisselectbook.com\/wp-content\/uploads\/2026\/02\/Cheveux-gris-avant-30-ans-une-carence-nutritionnelle-meconnue-favorise-leur-apparition.jpg","type":"image\/jpeg"}],"author":"zaccharie touboul","twitter_card":"summary_large_image","twitter_misc":{"Written by":"zaccharie touboul","Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.parisselectbook.com\/en\/2026\/02\/04\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\/#article","isPartOf":{"@id":"https:\/\/www.parisselectbook.com\/en\/2026\/02\/04\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\/"},"author":{"name":"zaccharie touboul","@id":"https:\/\/www.parisselectbook.com\/en\/#\/schema\/person\/3675d9a80d6cbefbfde597e393c036aa"},"headline":"Grey hair before the age of 30: a little-known nutritional deficiency promotes its appearance","datePublished":"2026-02-04T08:17:00+00:00","mainEntityOfPage":{"@id":"https:\/\/www.parisselectbook.com\/en\/2026\/02\/04\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\/"},"wordCount":525,"commentCount":0,"publisher":{"@id":"https:\/\/www.parisselectbook.com\/en\/#organization"},"image":{"@id":"https:\/\/www.parisselectbook.com\/en\/2026\/02\/04\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\/#primaryimage"},"thumbnailUrl":"https:\/\/www.parisselectbook.com\/wp-content\/uploads\/2026\/02\/Cheveux-gris-avant-30-ans-une-carence-nutritionnelle-meconnue-favorise-leur-apparition.jpg","keywords":["gray hair before age 30"],"articleSection":["News du Luxe"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.parisselectbook.com\/en\/2026\/02\/04\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.parisselectbook.com\/en\/2026\/02\/04\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\/","url":"https:\/\/www.parisselectbook.com\/en\/2026\/02\/04\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\/","name":"Grey hair before the age of 30: a little-known nutritional deficiency promotes its appearance","isPartOf":{"@id":"https:\/\/www.parisselectbook.com\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.parisselectbook.com\/en\/2026\/02\/04\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\/#primaryimage"},"image":{"@id":"https:\/\/www.parisselectbook.com\/en\/2026\/02\/04\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\/#primaryimage"},"thumbnailUrl":"https:\/\/www.parisselectbook.com\/wp-content\/uploads\/2026\/02\/Cheveux-gris-avant-30-ans-une-carence-nutritionnelle-meconnue-favorise-leur-apparition.jpg","datePublished":"2026-02-04T08:17:00+00:00","description":"gray hair before age 30 Copper or B12 deficiency can be a problem. A simple check-up can identify correctable deficiencies.","breadcrumb":{"@id":"https:\/\/www.parisselectbook.com\/en\/2026\/02\/04\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.parisselectbook.com\/en\/2026\/02\/04\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.parisselectbook.com\/en\/2026\/02\/04\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\/#primaryimage","url":"https:\/\/www.parisselectbook.com\/wp-content\/uploads\/2026\/02\/Cheveux-gris-avant-30-ans-une-carence-nutritionnelle-meconnue-favorise-leur-apparition.jpg","contentUrl":"https:\/\/www.parisselectbook.com\/wp-content\/uploads\/2026\/02\/Cheveux-gris-avant-30-ans-une-carence-nutritionnelle-meconnue-favorise-leur-apparition.jpg","width":1200,"height":675,"caption":"Cheveux gris avant 30 ans : une carence nutritionnelle m\u00e9connue favorise leur apparition"},{"@type":"BreadcrumbList","@id":"https:\/\/www.parisselectbook.com\/en\/2026\/02\/04\/grey-hair-before-the-age-of-30-a-little-known-nutritional-deficiency-promotes-its-appearance\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Que faire \u00e0 Paris ?","item":"https:\/\/www.parisselectbook.com\/en\/category\/que-faire-a-paris-en\/"},{"@type":"ListItem","position":2,"name":"Grey hair before the age of 30: a little-known nutritional deficiency promotes its appearance"}]},{"@type":"WebSite","@id":"https:\/\/www.parisselectbook.com\/en\/#website","url":"https:\/\/www.parisselectbook.com\/en\/","name":"Paris Select Book","description":"Le guide chic des Tendances Parisiennes","publisher":{"@id":"https:\/\/www.parisselectbook.com\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.parisselectbook.com\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.parisselectbook.com\/en\/#organization","name":"Paris Select","url":"https:\/\/www.parisselectbook.com\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.parisselectbook.com\/en\/#\/schema\/logo\/image\/","url":"https:\/\/www.parisselectbook.com\/wp-content\/uploads\/2024\/06\/logo-IG-TKTK-LK.png","contentUrl":"https:\/\/www.parisselectbook.com\/wp-content\/uploads\/2024\/06\/logo-IG-TKTK-LK.png","width":684,"height":665,"caption":"Paris Select"},"image":{"@id":"https:\/\/www.parisselectbook.com\/en\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/parisselect","https:\/\/www.instagram.com\/parisselect\/","https:\/\/www.tiktok.com\/@parisselect"]},{"@type":"Person","@id":"https:\/\/www.parisselectbook.com\/en\/#\/schema\/person\/3675d9a80d6cbefbfde597e393c036aa","name":"zaccharie touboul","sameAs":["https:\/\/www.parisselectbook.com\/"]}]}},"_links":{"self":[{"href":"https:\/\/www.parisselectbook.com\/en\/wp-json\/wp\/v2\/posts\/209193","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.parisselectbook.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.parisselectbook.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.parisselectbook.com\/en\/wp-json\/wp\/v2\/users\/13"}],"replies":[{"embeddable":true,"href":"https:\/\/www.parisselectbook.com\/en\/wp-json\/wp\/v2\/comments?post=209193"}],"version-history":[{"count":0,"href":"https:\/\/www.parisselectbook.com\/en\/wp-json\/wp\/v2\/posts\/209193\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.parisselectbook.com\/en\/wp-json\/wp\/v2\/media\/209137"}],"wp:attachment":[{"href":"https:\/\/www.parisselectbook.com\/en\/wp-json\/wp\/v2\/media?parent=209193"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.parisselectbook.com\/en\/wp-json\/wp\/v2\/categories?post=209193"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.parisselectbook.com\/en\/wp-json\/wp\/v2\/tags?post=209193"},{"taxonomy":"quartier","embeddable":true,"href":"https:\/\/www.parisselectbook.com\/en\/wp-json\/wp\/v2\/quartier?post=209193"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}