{"id":17231,"date":"2017-05-23T17:03:07","date_gmt":"2017-05-23T15:03:07","guid":{"rendered":"https:\/\/hellocare.com\/?p=17231"},"modified":"2025-12-05T10:09:29","modified_gmt":"2025-12-05T09:09:29","slug":"vitamine-b12","status":"publish","type":"post","link":"https:\/\/www.hellocare.com\/blog\/vitamine-b12\/","title":{"rendered":"Vitamine B12 : peu de carences mais une prot\u00e9ine importante"},"content":{"rendered":"

Par le L\u00e9a Magiore, M\u00e9decin G\u00e9n\u00e9raliste<\/em><\/p>\n<\/div>

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O<\/span>n connait tous la vitamine C, qui permet de nous r\u00e9veiller et de booster nos d\u00e9fenses immunitaires. Aujourd\u2019hui attardons nous sur la vitamine B12, autrement appel\u00e9e \u00ab cobalamine \u00bb. Son r\u00f4le, les risques de carences et les solutions : Retrouvez toutes les explications d\u2019un pharmacien<\/span><\/span><\/p>\n<\/div>

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\"Groupe<\/span><\/div>
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La vitamine b12, pour quoi ? comment ?<\/h2><\/h1><\/div>
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A, c, b8, b12\u2026 mais il y en a combien des vitamines ?<\/h3>\n

Commen\u00e7ons par d\u00e9finir une vitamine :\u00a0c\u2019est une substance organique dont notre organisme a besoin pour fonctionner normalement<\/strong>\u00a0(une substance organique est une mati\u00e8re compos\u00e9e par les mol\u00e9cules de base qui forment tous les \u00eatres vivants : carbone \u00ab C \u00bb et hydrog\u00e8ne \u00ab H \u00bb).<\/p>\n

Le corps humain ne produit pas les vitamines tout seul, ou bien il les produit en trop petite quantit\u00e9 par rapport \u00e0 ce dont il a besoin. Les vitamines sont des \u00e9l\u00e9ments indispensables pour le fonctionnement de notre organisme.<\/p>\n

Il en existe 13 pour un \u00eatre humain (Vitamine A, D, E, K, C, B1, B2, B3, B5, B6, B8, B9 et B12). Toutes ont un r\u00f4le, et sont\u00a0n\u00e9cessaires pour \u00eatre en bonne sant\u00e9<\/strong>. On les trouve dans diff\u00e9rents aliments afin de satisfaire nos besoins.<\/p>\n<\/div>\n<\/div>\n<\/div>

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B12, une vitamine importante, comme toutes les autres\u2026<\/h3>\n

La vitamine B12 est\u00a0un \u00e9l\u00e9ment essentiel \u00e0 la croissance des cellules qui composent notre corps<\/strong>, \u00e0 leur fonctionnement, mais aussi et surtout \u00e0\u00a0l\u2019\u00e9quilibre du syst\u00e8me nerveux<\/strong>. Elle a un r\u00f4le important dans\u00a0la synth\u00e8se de l\u2019ADN<\/strong>, des prot\u00e9ines de notre organisme, dans la protection de certaines fibres nerveuses (les nerfs), dans la\u00a0formation des globules rouges<\/strong>, et dans\u00a0le m\u00e9tabolisme des glucides et des lipides<\/strong>\u00a0(qui fournissent l\u2019\u00e9nergie de nos cellules).<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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En cas de carence<\/strong>\u00a0en vitamine B12, le corps est en moins grande forme, \u00e0 commencer par\u00a0une an\u00e9mie<\/strong>\u00a0(pas assez de globules rouges dans le sang)\u2026 Mais pas de panique, il est estim\u00e9\u00a0qu\u2019un r\u00e9gime \u00ab\u00a0standard occidental\u00a0\u00bb est susceptible de couvrir les besoins pendant 5 \u00e0 6 ans apr\u00e8s l\u2019arr\u00eat d\u2019un apport en vitamine B12<\/strong>\u00a0! Cette carence est relativement rare, car certains aliments sont enrichis en vitamine\u00a0!<\/p>\n

Il faut savoir que la vitamine B12 est synth\u00e9tis\u00e9e uniquement par des bact\u00e9ries que l\u2019on retrouve dans les syst\u00e8mes digestifs des animaux, mais pas chez les v\u00e9g\u00e9taux. L\u2019Homme en produit mais en toute petite quantit\u00e9\u2026\u00a0Il faut donc manger de la viande ou animaux marins<\/strong>pour en apporter au corps, ou bien manger des aliments enrichis en vitamine B12 si l\u2019on ne mange pas de viande ou de poisson. \u00a0On la trouve en particulier dans les abats, les oeufs et les produits laitiers.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>

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Pourquoi vitamine, et pourquoi b12 ?<\/h3>\n

On parle de\u00a0nutriments<\/strong>\u00a0lorsque que l\u2019on parle d\u2019\u00e9l\u00e9ments dont le corps a besoin<\/strong>. Les vitamines sont des nutriments, avec une fonction sp\u00e9cifique. Les vitamines se diff\u00e9rencient des \u00ab\u00a0aliments ordinaires\u00a0\u00bb dont le corps a besoin par leur tr\u00e8s petite quantit\u00e9 qu\u2019il nous faut manger tous les jours.<\/p>\n

On parle de la vitamine B12 car les vitamines B sont en r\u00e9alit\u00e9 compos\u00e9es par huit vitamines diff\u00e9rentes, toutes hydrosolubles (solubles dans l\u2019eau), qui ont\u00a0un r\u00f4le important dans le fonctionnement des cellules de notre corps<\/strong>.<\/p>\n

Les chercheurs pensaient \u00e0 l\u2019origine qu\u2019il n\u2019y avait qu\u2019un seul \u00e9l\u00e9ment, mais ont d\u00e9couvert par la suite que diff\u00e9rents \u00e9l\u00e9ments coexistent pour former ce qu\u2019on peut appeler le \u00ab\u00a0complexe de vitamine B\u00a0\u00bb. Chacun ayant son r\u00f4le, mais d\u00e9pendant parfois des autres\u00a0!<\/p>\n<\/div>\n<\/div>\n<\/div>

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> Pour levez le doute sur votre \u00e9tat de sant\u00e9, parlez \u00e0 un m\u00e9decin sans rdv<\/a><\/em><\/p>\n<\/div>

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Les conseils du pharmacien<\/h2><\/h2><\/div>
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Mangez de mani\u00e8re vari\u00e9e<\/span><\/h3>\n
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De fa\u00e7on g\u00e9n\u00e9ral, il faut faire attention \u00e0\u00a0manger de fa\u00e7on vari\u00e9e<\/strong>, peu importe le r\u00e9gime suivi. Il faut alterner les aliments, et essayer de manger des plats contenant tout ce dont le corps a besoin.\u00a0Dans l\u2019hypoth\u00e8se o\u00f9 l\u2019on suit un r\u00e9gime particulier, sans viande ou sans poisson<\/strong>, il faut veiller tout de m\u00eame \u00e0 consommer\u00a0des aliments enrichis en vitamine B<\/strong>, afin de ne pas risquer d\u2019en manquer.<\/p>\n

En hiver, on peut tout de m\u00eame suivre\u00a0des cures d\u2019un mois de complexes vitamin\u00e9s en compl\u00e9ment alimentaire<\/strong>, afin de permettre au corps de bien r\u00e9sister \u00e0 cette p\u00e9riode de l\u2019ann\u00e9e un peu plus dure pour nous.<\/p>\n

N\u2019h\u00e9sitez pas \u00e0 vous tourner vers votre professionnel de sant\u00e9 pour toute question sur le sujet\u00a0de votre alimentation !<\/strong><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>

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\"Pharmacienne<\/span><\/div>
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\"consulter<\/a><\/span><\/div>
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n connait tous la vitamine C, qui permet de nous r\u00e9veiller et de booster nos d\u00e9fenses immunitaires. Aujourd\u2019hui<\/p>\n","protected":false},"author":28,"featured_media":23573,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[551],"tags":[],"class_list":["post-17231","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-alimentation-nutrition"],"acf":[],"yoast_head":"\nVitamine B12 : peu de carences mais une prot\u00e9ine importante<\/title>\n<meta name=\"description\" content=\"Bien que les carences soient rares, la vitamine B12 reste primordiale. 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