{"id":528,"date":"2026-06-09T11:28:51","date_gmt":"2026-06-09T10:28:51","guid":{"rendered":"https:\/\/dev-prestashop-2b2cd056cbc0.prestashop.sh\/blog\/?post_type=lexique&#038;p=528"},"modified":"2026-06-18T16:40:35","modified_gmt":"2026-06-18T15:40:35","slug":"a-quoi-sert-la-vitamine-d3-et-quels-sont-ses-bienfaits","status":"publish","type":"lexique","link":"https:\/\/www.nutrixeal.fr\/expertise\/lexique\/a-quoi-sert-la-vitamine-d3-et-quels-sont-ses-bienfaits\/","title":{"rendered":"\u00c0 quoi sert la vitamine D3 et quels sont ses bienfaits&nbsp;?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">La vitamine D3 occupe une place centrale dans le bon fonctionnement de votre organisme. Au laboratoire Nutrixeal, nous accordons une attention particuli\u00e8re \u00e0 ce nutriment liposoluble produit par votre peau sous l&rsquo;effet des rayons solaires. D\u00e9couvrez dans cet article les bienfaits de la vitamine D3, ses sources naturelles, les recommandations d&rsquo;apport et les conseils pour \u00e9viter une carence.<\/p>\n\n\n\r\n<section class=\"article-callout article-callout--summary panel summary-box\">\r\n\r\n    <div class=\"article-callout__header\">\r\n      <span class=\"article-callout__icon\" aria-hidden=\"true\">\r\n                  <svg width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\">\r\n            <path d=\"M3.5 10C3.5 6.22876 3.5 4.34315 4.7448 3.17157C5.98959 2 7.99306 2 12 2H12.7727C16.0339 2 17.6645 2 18.7969 2.79784C19.1214 3.02643 19.4094 3.29752 19.6523 3.60289C20.5 4.66867 20.5 6.20336 20.5 9.27273V11.8182C20.5 14.7814 20.5 16.2629 20.0311 17.4462C19.2772 19.3486 17.6829 20.8491 15.6616 21.5586C14.4044 22 12.8302 22 9.68182 22C7.88275 22 6.98322 22 6.26478 21.7478C5.10979 21.3424 4.19875 20.4849 3.76796 19.3979C3.5 18.7217 3.5 17.8751 3.5 16.1818V10Z\" stroke=\"#4FA729\" stroke-width=\"1.5\" stroke-linejoin=\"round\"\/>\r\n            <path d=\"M20.5 12C20.5 13.8409 19.0076 15.3333 17.1667 15.3333C16.5009 15.3333 15.716 15.2167 15.0686 15.3901C14.4935 15.5442 14.0442 15.9935 13.8901 16.5686C13.7167 17.216 13.8333 18.0009 13.8333 18.6667C13.8333 20.5076 12.3409 22 10.5 22\" stroke=\"#4FA729\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/>\r\n            <path d=\"M8 7H15\" stroke=\"#4FA729\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/>\r\n            <path d=\"M8 11H11\" stroke=\"#4FA729\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/>\r\n          <\/svg>\r\n                <\/span>\r\n\r\n      <p class=\"article-callout__title\">\r\n        En r\u00e9sum\u00e9      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"article-callout__content\">\r\n      \n<ul class=\"wp-block-list\">\n<li><strong>Vitamine D3 naturelle<\/strong>&nbsp;: Produite par la peau sous l\u2019effet du soleil, la vitamine D3 devient active apr\u00e8s transformation par le foie et les reins.<\/li>\n\n\n\n<li><strong>Diff\u00e9rence avec la D2<\/strong>&nbsp;: La vitamine D3, pr\u00e9sente dans les poissons gras ou le jaune d\u2019\u0153uf, augmente plus durablement le taux sanguin que la D2.<\/li>\n\n\n\n<li><strong>Meilleure efficacit\u00e9 que la D2<\/strong>&nbsp;: La vitamine D3 \u00e9l\u00e8ve plus durablement le taux sanguin de vitamine D que la D2, issue des v\u00e9g\u00e9taux et champignons.<\/li>\n\n\n\n<li><strong>Soutien osseux majeur<\/strong>&nbsp;: Elle favorise l\u2019absorption du calcium et du phosphore, deux min\u00e9raux indispensables \u00e0 la solidit\u00e9 des os et des dents.<\/li>\n\n\n\n<li><strong>R\u00f4le musculaire et immunitaire<\/strong>&nbsp;: La vitamine D3 contribue au bon fonctionnement des muscles et soutient les d\u00e9fenses naturelles.<\/li>\n\n\n\n<li><strong>D\u00e9veloppement des enfants<\/strong>&nbsp;: Chez les plus jeunes, elle accompagne la croissance osseuse et la mise en place d\u2019une dentition normale.<\/li>\n\n\n\n<li><strong>Sources \u00e0 conna\u00eetre&nbsp;: Soleil, poissons gras, jaune d\u2019\u0153uf et compl\u00e9ments permettent de couvrir les besoins, surtout lorsque l\u2019exposition naturelle est insuffisante.<\/strong><\/li>\n<\/ul>\n    <\/div>\r\n\r\n<\/section>\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-2ab2d195\"><h2 class=\"uagb-heading-text\">Qu&rsquo;est-ce que la vitamine D3&nbsp;?<\/h2><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">La <strong>vitamine D3 ou chol\u00e9calcif\u00e9rol<\/strong> appartient \u00e0 la famille des vitamines liposolubles, c&rsquo;est-\u00e0-dire solubles dans les graisses. Elle se distingue par une particularit\u00e9 remarquable&nbsp;: votre corps sait la fabriquer lui-m\u00eame gr\u00e2ce \u00e0 l&rsquo;exposition au soleil.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Une fois produite par la peau ou apport\u00e9e par l&rsquo;alimentation, cette mol\u00e9cule transite par le foie puis par les reins pour devenir biologiquement active [1]. Elle joue un r\u00f4le essentiel dans le maintien de l&rsquo;\u00e9quilibre du calcium, du phosphore et participe \u00e0 de nombreuses fonctions physiologiques.<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-59c95ebd\"><h2 class=\"uagb-heading-text\">Quelles sont les diff\u00e9rences entre vitamine D2 et D3&nbsp;?<\/h2><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">La vitamine D existe principalement sous deux formes naturelles. La <strong>vitamine D2 ou ergocalcif\u00e9rol<\/strong> provient des v\u00e9g\u00e9taux et des champignons expos\u00e9s aux UV. La vitamine D3, quant \u00e0 elle, est d&rsquo;origine animale et se trouve dans les poissons gras, le jaune d&rsquo;\u0153uf ou encore l&rsquo;huile de foie de morue [2].<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les \u00e9tudes scientifiques ont mis en \u00e9vidence une meilleure efficacit\u00e9 de la D3 pour \u00e9lever durablement le taux sanguin de vitamine D par rapport \u00e0 la D2 [3]. Pour les personnes suivant une alimentation v\u00e9g\u00e9tale, des sources de D3 issues du lichen sont aujourd&rsquo;hui disponibles.<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-a89c3882\"><h2 class=\"uagb-heading-text\">Quels sont les bienfaits de la vitamine D3 pour votre sant\u00e9.<\/h2><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-7f0b220b\"><h3 class=\"uagb-heading-text\">Soutien du syst\u00e8me immunitaire&nbsp;: une d\u00e9fense naturelle renforc\u00e9e<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">La vitamine D contribue au <strong>fonctionnement normal du syst\u00e8me immunitaire<\/strong> chez l&rsquo;adulte comme chez l&rsquo;enfant [4]. Au laboratoire Nutrixeal, nous savons combien ce r\u00f4le est pr\u00e9cieux, notamment durant la saison hivernale o\u00f9 l&rsquo;ensoleillement diminue.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les cellules immunitaires poss\u00e8dent des r\u00e9cepteurs sp\u00e9cifiques \u00e0 la vitamine D, ce qui explique son implication directe dans la r\u00e9gulation des d\u00e9fenses naturelles. Un statut ad\u00e9quat soutient ainsi votre immunit\u00e9 au quotidien.<\/p>\n\n\n\r\n<section class=\"article-callout article-callout--takeaway panel summary-box\">\r\n\r\n    <div class=\"article-callout__header\">\r\n      <span class=\"article-callout__icon\" aria-hidden=\"true\">\r\n                  <svg width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\r\n            <path d=\"M5.14286 14C4.41735 12.8082 4 11.4118 4 9.91886C4 5.54539 7.58172 2 12 2C16.4183 2 20 5.54539 20 9.91886C20 11.4118 19.5827 12.8082 18.8571 14\" stroke=\"#98800B\" stroke-width=\"1.5\" stroke-linecap=\"round\"\/>\r\n            <path d=\"M7.38287 17.0982C7.291 16.8216 7.24507 16.6833 7.25042 16.5713C7.26174 16.3343 7.41114 16.1262 7.63157 16.0405C7.73579 16 7.88105 16 8.17157 16H15.8284C16.119 16 16.2642 16 16.3684 16.0405C16.5889 16.1262 16.7383 16.3343 16.7496 16.5713C16.7549 16.6833 16.709 16.8216 16.6171 17.0982C16.4473 17.6094 16.3624 17.8651 16.2315 18.072C15.9572 18.5056 15.5272 18.8167 15.0306 18.9408C14.7935 19 14.525 19 13.9881 19H10.0119C9.47495 19 9.2065 19 8.96944 18.9408C8.47283 18.8167 8.04281 18.5056 7.7685 18.072C7.63755 17.8651 7.55266 17.6094 7.38287 17.0982Z\" stroke=\"#98800B\" stroke-width=\"1.5\"\/>\r\n            <path d=\"M15 19L14.8707 19.6466C14.7293 20.3537 14.6586 20.7072 14.5001 20.9866C14.2552 21.4185 13.8582 21.7439 13.3866 21.8994C13.0816 22 12.7211 22 12 22C11.2789 22 10.9184 22 10.6134 21.8994C10.1418 21.7439 9.74484 21.4185 9.49987 20.9866C9.34144 20.7072 9.27073 20.3537 9.12932 19.6466L9 19\" stroke=\"#98800B\" stroke-width=\"1.5\"\/>\r\n            <path d=\"M12 16V11\" stroke=\"#98800B\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/>\r\n          <\/svg>\r\n                <\/span>\r\n\r\n      <p class=\"article-callout__title\">\r\n        Bon \u00e0 savoir      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"article-callout__content\">\r\n      \n<p class=\"wp-block-paragraph\">Les cellules immunitaires expriment des r\u00e9cepteurs \u00e0 la vitamine D, ce qui leur permet de r\u00e9agir directement \u00e0 sa pr\u00e9sence. Un apport suffisant tout au long de l&rsquo;ann\u00e9e participe au maintien d&rsquo;un syst\u00e8me de d\u00e9fense \u00e9quilibr\u00e9, tant sur le plan inn\u00e9 que adaptatif.<\/p>\n    <\/div>\r\n\r\n<\/section>\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-d925551f\"><h3 class=\"uagb-heading-text\">Sant\u00e9 osseuse et musculaire&nbsp;: pour des os solides et des muscles performants<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Le r\u00f4le de la vitamine D3 sur le squelette et les muscles est largement document\u00e9. Elle contribue au <strong>maintien d&rsquo;une ossature normale<\/strong> ainsi qu&rsquo;au maintien d&rsquo;une fonction musculaire normale [4].<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cette double action s&rsquo;av\u00e8re particuli\u00e8rement int\u00e9ressante avec l&rsquo;avanc\u00e9e en \u00e2ge. La perte de masse osseuse et l&rsquo;affaiblissement musculaire augmentent en effet le risque de chutes chez les personnes \u00e2g\u00e9es. Maintenir un statut correct en vitamine D repr\u00e9sente donc un pilier important du bien-\u00eatre global, \u00e0 tout \u00e2ge de la vie.<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-eb537240\"><h3 class=\"uagb-heading-text\">Absorption du calcium et du phosphore&nbsp;: cl\u00e9s d&rsquo;une ossature saine<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">La vitamine D3 contribue \u00e0 l&rsquo;<strong>absorption du calcium et du phosphore<\/strong>, deux min\u00e9raux indispensables \u00e0 la solidit\u00e9 de votre squelette [4]. Sans elle, ces nutriments pr\u00e9sents dans votre alimentation sont moins bien assimil\u00e9s par l&rsquo;intestin.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Elle participe \u00e9galement au maintien d&rsquo;une calc\u00e9mie normale, c&rsquo;est-\u00e0-dire d&rsquo;un taux de calcium sanguin \u00e9quilibr\u00e9. Cette r\u00e9gulation fine permet une bonne min\u00e9ralisation osseuse et soutient le maintien d&rsquo;une dentition normale. Au laboratoire Nutrixeal, nous consid\u00e9rons cette vitamine comme un cofacteur incontournable de l&rsquo;\u00e9quilibre min\u00e9ral.<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-801fb679\"><h3 class=\"uagb-heading-text\">R\u00f4le dans la croissance et le d\u00e9veloppement osseux des enfants<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Chez les plus jeunes, la vitamine D3 est <strong>n\u00e9cessaire \u00e0 une croissance<\/strong> et un d\u00e9veloppement osseux normaux [4]. Elle accompagne la formation du squelette et la mise en place de la dentition durant les premi\u00e8res ann\u00e9es de vie.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les recommandations p\u00e9diatriques fran\u00e7aises pr\u00e9conisent une suppl\u00e9mentation quotidienne d\u00e8s les premiers mois afin de couvrir les besoins en chol\u00e9calcif\u00e9rol [5]. Cette mesure pr\u00e9ventive vise \u00e0 soutenir la min\u00e9ralisation des os en pleine construction et \u00e0 accompagner sereinement les \u00e9tapes cl\u00e9s de la croissance.<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-b7cdb1e4\"><h3 class=\"uagb-heading-text\">R\u00f4le dans la division cellulaire<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">La vitamine D3 joue un r\u00f4le dans le <strong>processus de division cellulaire<\/strong> [4]. Cette action discr\u00e8te mais fondamentale participe au renouvellement des tissus et \u00e0 la r\u00e9g\u00e9n\u00e9ration des cellules de votre organisme.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le m\u00e9canisme repose sur la fixation de la forme active de la vitamine D sur des r\u00e9cepteurs nucl\u00e9aires pr\u00e9sents dans de nombreux types cellulaires. Cette interaction module l&rsquo;expression de plusieurs g\u00e8nes impliqu\u00e9s dans la diff\u00e9renciation et le cycle cellulaire, soulignant la place transversale de ce nutriment dans l&rsquo;\u00e9quilibre physiologique.<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-a5fbb484\"><h2 class=\"uagb-heading-text\">Comment assurer un apport suffisant en vitamine D3&nbsp;?<\/h2><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-57fd3795\"><h3 class=\"uagb-heading-text\">Le soleil&nbsp;: votre premi\u00e8re source naturelle (avec pr\u00e9cautions)<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">L&rsquo;<strong>exposition au soleil<\/strong> demeure la voie principale d&rsquo;apport en vitamine D3. Sous l&rsquo;effet des rayons UVB, votre peau transforme un pr\u00e9curseur du cholest\u00e9rol en chol\u00e9calcif\u00e9rol [6]. Quinze \u00e0 vingt minutes d&rsquo;exposition des avant-bras et du visage en fin de matin\u00e9e ou dans l&rsquo;apr\u00e8s-midi suffisent g\u00e9n\u00e9ralement pour les peaux claires.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cette synth\u00e8se cutan\u00e9e varie selon plusieurs param\u00e8tres&nbsp;:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>La latitude et la saison (r\u00e9duite d&rsquo;octobre \u00e0 mars dans nos r\u00e9gions)<\/li>\n\n\n\n<li>L&rsquo;\u00e2ge, qui diminue progressivement la capacit\u00e9 de production<\/li>\n\n\n\n<li>La pigmentation de la peau<\/li>\n\n\n\n<li>L&rsquo;utilisation de protections solaires<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-6938607f\"><h3 class=\"uagb-heading-text\">Aliments riches en vitamine D3&nbsp;: o\u00f9 la trouver dans votre assiette&nbsp;?<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Certains <strong>aliments riches en vitamine<\/strong> D3 m\u00e9ritent une place r\u00e9guli\u00e8re dans vos menus. Les <em>poissons gras<\/em> figurent en t\u00eate de liste, suivis par quelques produits d&rsquo;origine animale et v\u00e9g\u00e9tale.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Aliment<\/th><th>Teneur approximative en vitamine D3 (\u00b5g \/ 100 g)<\/th><\/tr><\/thead><tbody><tr><td>Huile de foie de morue<\/td><td>250<\/td><\/tr><tr><td>Hareng fum\u00e9<\/td><td>22<\/td><\/tr><tr><td>Saumon cuit<\/td><td>10 \u00e0 13<\/td><\/tr><tr><td>Maquereau cuit<\/td><td>10<\/td><\/tr><tr><td>Sardines \u00e0 l&rsquo;huile<\/td><td>7<\/td><\/tr><tr><td>Jaune d&rsquo;\u0153uf<\/td><td>2 \u00e0 5<\/td><\/tr><tr><td>Champignons expos\u00e9s aux UV (D2)<\/td><td>1 \u00e0 5<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Source&nbsp;: table de composition Ciqual de l&rsquo;ANSES [2]. La consommation de deux portions de poissons par semaine, dont une de poisson gras, reste un rep\u00e8re utile.<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-14607ebd\"><h3 class=\"uagb-heading-text\">Suppl\u00e9mentation en vitamine D3&nbsp;: quand et comment&nbsp;?<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Quand l&rsquo;alimentation et la lumi\u00e8re naturelle ne suffisent plus, les <a href=\"https:\/\/www.nutrixeal.fr\/67-vitamine-d3-vegetarienne\">compl\u00e9ments alimentaires en vitamine D3<\/a> apportent une solution pratique. Au laboratoire Nutrixeal, nous proposons des formes de chol\u00e9calcif\u00e9rol hautement biodisponibles, adapt\u00e9es \u00e0 diff\u00e9rents profils <strong>(v\u00e9g\u00e9tariens, vegans, \u2026)<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La suppl\u00e9mentation se r\u00e9v\u00e8le particuli\u00e8rement pertinente entre novembre et mars, p\u00e9riode durant laquelle la synth\u00e8se cutan\u00e9e est tr\u00e8s limit\u00e9e sous nos latitudes [7]. Pour choisir la dose adapt\u00e9e \u00e0 vos besoins, un avis m\u00e9dical et, si n\u00e9cessaire, un dosage sanguin de la 25(OH)D restent les meilleurs rep\u00e8res.<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-a1d45698\"><h2 class=\"uagb-heading-text\">Carence en vitamine D3&nbsp;: un probl\u00e8me majeur et ses cons\u00e9quences<\/h2><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-35176ecb\"><h3 class=\"uagb-heading-text\">Qui sont les personnes \u00e0 risque de carence&nbsp;?<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Plusieurs cat\u00e9gories de la <strong>population sont particuli\u00e8rement<\/strong> concern\u00e9es par le risque de d\u00e9ficit. En France, plus de 70 % des adultes pr\u00e9sentent un apport insuffisant et 6,5 % une carence av\u00e9r\u00e9e [7].<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les profils \u00e0 surveiller en priorit\u00e9 incluent&nbsp;:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Les nourrissons et les jeunes enfants<\/li>\n\n\n\n<li>Les personnes \u00e2g\u00e9es, dont la synth\u00e8se cutan\u00e9e diminue<\/li>\n\n\n\n<li>Les femmes enceintes et allaitantes<\/li>\n\n\n\n<li>Les personnes \u00e0 la peau fonc\u00e9e<\/li>\n\n\n\n<li>Celles vivant en int\u00e9rieur ou peu expos\u00e9es au soleil<\/li>\n\n\n\n<li>Les personnes en surpoids ou souffrant de pathologies digestives<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-5df2be48\"><h3 class=\"uagb-heading-text\">Quels sont les signes et sympt\u00f4mes d&rsquo;un manque de vitamine D3&nbsp;?<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Une <strong>carence en vitamine D3<\/strong> peut se manifester de mani\u00e8re insidieuse. Les signes les plus souvent rapport\u00e9s sont une fatigue inexpliqu\u00e9e, des douleurs musculaires diffuses ou encore une faiblesse au niveau des membres inf\u00e9rieurs [8].<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D&rsquo;autres manifestations peuvent appara\u00eetre progressivement, comme une sensibilit\u00e9 accrue aux infections hivernales, des douleurs osseuses ou une diminution du tonus g\u00e9n\u00e9ral. Ces sympt\u00f4mes \u00e9tant peu sp\u00e9cifiques, seul un dosage sanguin permet de confirmer un d\u00e9ficit. Si vous suspectez un manque, parlez-en \u00e0 votre m\u00e9decin avant toute suppl\u00e9mentation.<\/p>\n\n\n\r\n<section class=\"article-callout article-callout--takeaway panel summary-box\">\r\n\r\n    <div class=\"article-callout__header\">\r\n      <span class=\"article-callout__icon\" aria-hidden=\"true\">\r\n                  <svg width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\r\n            <path d=\"M5.14286 14C4.41735 12.8082 4 11.4118 4 9.91886C4 5.54539 7.58172 2 12 2C16.4183 2 20 5.54539 20 9.91886C20 11.4118 19.5827 12.8082 18.8571 14\" stroke=\"#98800B\" stroke-width=\"1.5\" stroke-linecap=\"round\"\/>\r\n            <path d=\"M7.38287 17.0982C7.291 16.8216 7.24507 16.6833 7.25042 16.5713C7.26174 16.3343 7.41114 16.1262 7.63157 16.0405C7.73579 16 7.88105 16 8.17157 16H15.8284C16.119 16 16.2642 16 16.3684 16.0405C16.5889 16.1262 16.7383 16.3343 16.7496 16.5713C16.7549 16.6833 16.709 16.8216 16.6171 17.0982C16.4473 17.6094 16.3624 17.8651 16.2315 18.072C15.9572 18.5056 15.5272 18.8167 15.0306 18.9408C14.7935 19 14.525 19 13.9881 19H10.0119C9.47495 19 9.2065 19 8.96944 18.9408C8.47283 18.8167 8.04281 18.5056 7.7685 18.072C7.63755 17.8651 7.55266 17.6094 7.38287 17.0982Z\" stroke=\"#98800B\" stroke-width=\"1.5\"\/>\r\n            <path d=\"M15 19L14.8707 19.6466C14.7293 20.3537 14.6586 20.7072 14.5001 20.9866C14.2552 21.4185 13.8582 21.7439 13.3866 21.8994C13.0816 22 12.7211 22 12 22C11.2789 22 10.9184 22 10.6134 21.8994C10.1418 21.7439 9.74484 21.4185 9.49987 20.9866C9.34144 20.7072 9.27073 20.3537 9.12932 19.6466L9 19\" stroke=\"#98800B\" stroke-width=\"1.5\"\/>\r\n            <path d=\"M12 16V11\" stroke=\"#98800B\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/>\r\n          <\/svg>\r\n                <\/span>\r\n\r\n      <p class=\"article-callout__title\">\r\n        Bon \u00e0 savoir      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"article-callout__content\">\r\n      \n<p class=\"wp-block-paragraph\">Le dosage de la 25(OH)D dans le sang est le marqueur de r\u00e9f\u00e9rence du statut vitaminique D. Il est recommand\u00e9 en cas de sympt\u00f4mes \u00e9vocateurs, apr\u00e8s une fracture, en EHPAD ou pour les personnes pr\u00e9sentant plusieurs facteurs de risque. Cet examen est prescrit par votre m\u00e9decin traitant.<\/p>\n    <\/div>\r\n\r\n<\/section>\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-3295db6b\"><h3 class=\"uagb-heading-text\">Quels sont les risques pour la sant\u00e9 li\u00e9s \u00e0 une d\u00e9ficience prolong\u00e9e&nbsp;?<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Une d\u00e9ficience prolong\u00e9e en chol\u00e9calcif\u00e9rol peut alt\u00e9rer la <strong>min\u00e9ralisation osseuse<\/strong> et fragiliser progressivement le squelette. Chez l&rsquo;enfant, un d\u00e9ficit s\u00e9v\u00e8re expose au rachitisme, tandis que chez l&rsquo;adulte il favorise l&rsquo;ost\u00e9omalacie et acc\u00e9l\u00e8re la perte de densit\u00e9 osseuse [7].<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Avec l&rsquo;\u00e2ge, ce d\u00e9ficit devient un facteur aggravant de l&rsquo;ost\u00e9oporose, en particulier chez les femmes m\u00e9nopaus\u00e9es. Les fonctions musculaires peuvent \u00e9galement p\u00e2tir d&rsquo;un statut bas, avec un retentissement sur la mobilit\u00e9 et l&rsquo;\u00e9quilibre. Maintenir un bon niveau tout au long de l&rsquo;ann\u00e9e reste donc un objectif important.<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-0e2af1d4\"><h2 class=\"uagb-heading-text\">Posologie et recommandations pour la vitamine D3<\/h2><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-2005afb7\"><h3 class=\"uagb-heading-text\">Quelle dose journali\u00e8re de vitamine D3 est recommand\u00e9e&nbsp;?<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">L<strong>\u2019apport satisfaisant<\/strong> pour la <strong>population fix\u00e9 par<\/strong> l&rsquo;ANSES s&rsquo;\u00e9l\u00e8ve \u00e0 15 \u00b5g par jour, soit 600 UI, pour les adultes [9]. Cette valeur correspond \u00e0 un apport satisfaisant, \u00e0 atteindre par l&rsquo;alimentation, l&rsquo;exposition solaire et, si besoin, la suppl\u00e9mentation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Voici quelques rep\u00e8res selon les profils&nbsp;:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nourrissons et enfants&nbsp;: 400 \u00e0 800 UI par jour selon les recommandations p\u00e9diatriques [5]<\/li>\n\n\n\n<li>Enfants et adolescents de plus de 10 ansAdolescents et adultes&nbsp;: 400 \u00e0 800 UI15 \u00b5g (600 UI) par jour<\/li>\n\n\n\n<li>Adultes, population g\u00e9n\u00e9rale&nbsp;: Variable selon les recommandations, certaines soci\u00e9t\u00e9s savantes proposent jusqu\u2019\u00e0 2 000 UI\/jour (Endocrine Society)<\/li>\n\n\n\n<li>Personnes \u00e2g\u00e9es&nbsp;: un apport renforc\u00e9 est souvent justifi\u00e9<\/li>\n\n\n\n<li>Femmes enceintes et allaitantes&nbsp;: suivi m\u00e9dical conseill\u00e9<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-b88f4513\"><h3 class=\"uagb-heading-text\">Quand prendre la vitamine D3&nbsp;: matin ou soir&nbsp;?<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Le moment de la prise importe peu, mais un d\u00e9tail change tout&nbsp;: la vitamine D3 \u00e9tant <strong>liposoluble, elle n\u00e9cessite<\/strong> la pr\u00e9sence de mati\u00e8res grasses pour \u00eatre correctement absorb\u00e9e [10]. Au laboratoire Nutrixeal, nous recommandons donc de la prendre au cours d&rsquo;un repas contenant un peu d&rsquo;huile, de beurre ou d&rsquo;avocat.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Que vous pr\u00e9f\u00e9riez le petit-d\u00e9jeuner, le d\u00e9jeuner ou le d\u00eener, l&rsquo;essentiel est la r\u00e9gularit\u00e9. Une prise quotidienne au m\u00eame moment facilite l&rsquo;observance et permet de stabiliser progressivement votre statut sanguin sur le long terme.<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-654f70cc\"><h3 class=\"uagb-heading-text\">Synergies et cofacteurs&nbsp;: avec quoi associer la vitamine D3&nbsp;?<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Pour optimiser son action, la vitamine D3 peut \u00eatre associ\u00e9e \u00e0 d&rsquo;autres <strong>vitamines et min\u00e9raux<\/strong> qui partagent ses fonctions physiologiques. Le calcium est le partenaire historique pour le maintien d&rsquo;une ossature normale.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D&rsquo;autres associations m\u00e9ritent votre attention&nbsp;:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Le magn\u00e9sium, qui participe \u00e0 l&rsquo;activation enzymatique de la vitamine D<\/li>\n\n\n\n<li>La vitamine K2, qui oriente le calcium vers les os plut\u00f4t que vers les art\u00e8res<\/li>\n\n\n\n<li>Le zinc, cofacteur immunitaire compl\u00e9mentaire<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ces synergies permettent d&rsquo;aborder la nutrition micronutritionnelle de fa\u00e7on globale et coh\u00e9rente.<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-df194a13\"><h2 class=\"uagb-heading-text\">Surdosage de vitamine D3&nbsp;: limites et effets secondaires possibles<\/h2><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">La vitamine D3 \u00e9tant stock\u00e9e dans les graisses, lefoie et les muscles, un exc\u00e8s peut s&rsquo;accumuler dans l&rsquo;organisme et entra\u00eener des effets ind\u00e9sirables [7]. La limite sup\u00e9rieure de s\u00e9curit\u00e9 fix\u00e9e par les autorit\u00e9s sanitaires est de 89 \u00b5g par jour pour les adultes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Un apport excessif et prolong\u00e9 <strong>peut provoquer une hypercalc\u00e9mie<\/strong>, c&rsquo;est-\u00e0-dire un taux trop \u00e9lev\u00e9 de calcium dans le sang. Les signes possibles incluent naus\u00e9es, perte d&rsquo;app\u00e9tit, soif intense, fatigue ou troubles r\u00e9naux. Pour cette raison, l&rsquo;autom\u00e9dication \u00e0 fortes doses doit \u00eatre \u00e9vit\u00e9e et toute suppl\u00e9mentation prolong\u00e9e discut\u00e9e avec un professionnel de sant\u00e9.<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-ba0addde\"><h2 class=\"uagb-heading-text\">FAQ&nbsp;: vos questions fr\u00e9quentes sur la vitamine D3<\/h2><\/div>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1781000610485\"><strong class=\"schema-faq-question\">La cr\u00e8me solaire bloque-t-elle la synth\u00e8se de vitamine D&nbsp;?<\/strong> <p class=\"schema-faq-answer\">Les cr\u00e8mes \u00e0 indice \u00e9lev\u00e9 filtrent une grande partie des UVB et r\u00e9duisent fortement la synth\u00e8se cutan\u00e9e. Quelques minutes d&rsquo;exposition sans protection avant application restent toutefois suffisantes.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1781000631602\"><strong class=\"schema-faq-question\">Compl\u00e9ment alimentaire ou ampoule&nbsp;: quelle forme choisir&nbsp;?<\/strong> <p class=\"schema-faq-answer\">Les compl\u00e9ments alimentaires assurent un apport r\u00e9gulier et stable, permettant de couvrir les besoins en vitamine D au quotidien&nbsp;; tandis que les ampoules \u00e0 forte dose, prescrites par un m\u00e9decin, conviennent dans des situations sp\u00e9cifiques de carence diagnostiqu\u00e9e.<\/p> <\/div> <\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-034f4642\"><h2 class=\"uagb-heading-text\">Bibliographie<\/h2><\/div>\n\n\n\n<ol class=\"wp-block-list\">\n<li>National Institutes of Health, Office of Dietary Supplements. Vitamin D &#8211; Fact Sheet for Health Professionals. Bethesda, MD&nbsp;: NIH.<\/li>\n\n\n\n<li>ANSES. Table de composition nutritionnelle des aliments Ciqual. Agence nationale de s\u00e9curit\u00e9 sanitaire de l&rsquo;alimentation, de l&rsquo;environnement et du travail.<\/li>\n\n\n\n<li>Tripkovic L. et al. Comparison of vitamin D2 and vitamin D3 supplementation in raising serum 25-hydroxyvitamin D status: a systematic review and meta-analysis. American Journal of Clinical Nutrition, 2012&nbsp;; mise \u00e0 jour 2017.<\/li>\n\n\n\n<li>R\u00e8glement (UE) n\u00b0 432\/2012 de la Commission \u00e9tablissant une liste des all\u00e9gations de sant\u00e9 autoris\u00e9es portant sur les denr\u00e9es alimentaires. Journal officiel de l&rsquo;Union europ\u00e9enne.<\/li>\n\n\n\n<li>Vidailhet M. et al. Vitamine D&nbsp;: encore et toujours&nbsp;! Soci\u00e9t\u00e9 Fran\u00e7aise de P\u00e9diatrie, Archives de P\u00e9diatrie.<\/li>\n\n\n\n<li>Holick M.F. Vitamin D Deficiency. The New England Journal of Medicine, 2007.<\/li>\n\n\n\n<li>ANSES. Vitamine D&nbsp;: pourquoi et comment assurer un apport suffisant&nbsp;? Avis et rapports de l&rsquo;Agence nationale de s\u00e9curit\u00e9 sanitaire.<\/li>\n\n\n\n<li>Haute Autorit\u00e9 de Sant\u00e9. Utilit\u00e9 clinique du dosage de la vitamine D &#8211; Rapport d&rsquo;\u00e9valuation. HAS, Saint-Denis La Plaine.<\/li>\n\n\n\n<li>ANSES. Actualisation des r\u00e9f\u00e9rences nutritionnelles fran\u00e7aises en vitamines et min\u00e9raux. Rapport d&rsquo;expertise collective.<\/li>\n\n\n\n<li>Mulligan G.B., Licata A. Taking vitamin D with the largest meal improves absorption and results in higher serum levels of 25-hydroxyvitamin D. Journal of Bone and Mineral Research, 2010.<\/li>\n<\/ol>\n\n\n\n\n\n\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>La vitamine D3 occupe une place centrale dans le bon fonctionnement de votre organisme. Au laboratoire Nutrixeal, nous accordons une attention particuli\u00e8re \u00e0 ce nutriment liposoluble produit par votre peau sous l&rsquo;effet des rayons solaires. D\u00e9couvrez dans cet article les bienfaits de la vitamine D3, ses sources naturelles, les recommandations d&rsquo;apport et les conseils pour [&hellip;]<\/p>\n","protected":false},"featured_media":726,"template":"","class_list":["post-528","lexique","type-lexique","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Vitamine D3 : tous ses bienfaits pour le corps<\/title>\n<meta name=\"description\" content=\"La vitamine D3 : le secret pour des os solides, une immunit\u00e9 au top et une peau \u00e9clatante. 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