{"id":16336,"date":"2020-01-21T00:00:00","date_gmt":"2020-01-20T23:00:00","guid":{"rendered":"https:\/\/www.ecoceutics.com\/sumplement-vitamina-b12\/"},"modified":"2023-10-17T12:29:01","modified_gmt":"2023-10-17T10:29:01","slug":"sumplement-vitamina-b12","status":"publish","type":"post","link":"https:\/\/www.ecoceutics.com\/ca\/respostes-de-salut\/vitamines\/sumplement-vitamina-b12\/","title":{"rendered":"Vitamina B12: Qu\u00e8 passa si no la prenc?"},"content":{"rendered":"<p>La <strong>vitamina B12 o <em>cobalamina <\/em><\/strong>\u00e9s una vitamina que cont\u00e9 un \u00e0tom de cobalt al seu centre i est\u00e0 envoltada d&#8217;una estructura org\u00e0nica complexa. Aquesta estructura pot variar en alguns \u00e0toms, donant lloc a diferents formes de vitamina B12. Les formes que es comercialitzen per a consum hum\u00e0 s\u00f3n la <em>cianocobalamina, <\/em>la <strong><em>metilcobalamina, <\/em>la <em>hidroxocobalamina <\/em>i l<em>&#8216; adenosilcobalamina<\/em><\/strong><em>. <\/em>Les m\u00e9s comunes s\u00f3n les dues primeres, presents en medicaments i complexos vitam\u00ednics.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Contenido de la p\u00e1gina<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #333333;color:#333333\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #333333;color:#333333\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.ecoceutics.com\/ca\/respostes-de-salut\/vitamines\/sumplement-vitamina-b12\/#quines-son-les-fonts-de-vitamina-b12\" >Quines s\u00f3n les fonts de vitamina B12?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.ecoceutics.com\/ca\/respostes-de-salut\/vitamines\/sumplement-vitamina-b12\/#funcions-de-la-vitamina-b12\" >Funcions de la vitamina B12<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.ecoceutics.com\/ca\/respostes-de-salut\/vitamines\/sumplement-vitamina-b12\/#falta-de-vitamina-b12-que-passa-si-hi-ha-mancanca\" >Falta de vitamina B12, qu\u00e8 passa si hi ha mancan\u00e7a?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ecoceutics.com\/ca\/respostes-de-salut\/vitamines\/sumplement-vitamina-b12\/#suplementacio-amb-vitamina-b12\" >Suplementaci\u00f3 amb vitamina B12<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"quines-son-les-fonts-de-vitamina-b12\"><\/span>Quines s\u00f3n les fonts de vitamina B12?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Els \u00e9ssers humans necessitem entre 1,8-2,8 micrograms (0,0018-0,0028 mil\u00b7ligrams) de vitamina B12 al dia, depenent de l&#8217;edat, del sexe, i d&#8217;altres factors.<\/p>\n<p>La vitamina B12 \u00e9s sintetitzada per bacteris anaer\u00f2bies, incloses les que els humans tenim al nostre intest\u00ed, per\u00f2 aquesta font no cobreix totes les necessitats di\u00e0ries que tenim les persones. <strong>Les plantes no s\u00f3n capaces de sintetitzar vitamina B12<\/strong>, per la qual cosa els humans necessitem menjar<strong> carn, llet o ous per obtenir vitamina B12<\/strong> de la dieta. Els aliments m\u00e9s rics en vitamina B12 s\u00f3n el fetge bov\u00ed, les v\u00edsceres de les aus, la truita, les clo\u00efsses, i en molt menor quantitat els rovells d\u2019ou.<\/p>\n<p>L&#8217;aprofitament de vitamina B12 &#8220;t\u00e9 truc&#8221;. La vitamina B12 necessita mig \u00e0cid a l&#8217;est\u00f3mac per poder ser absorbida, ja que aquesta vitamina s&#8217;emmagatzema unida a altres prote\u00efnes. L&#8217;\u00e0cid separa la vitamina de la prote\u00efna que l&#8217;emmagatzema, deixant-la lliure. Despr\u00e9s, la vitamina lliure s&#8217;ha d&#8217;unir a altres prote\u00efnes humanes (<em>prote\u00efnes R <\/em>i <em>factor intr\u00ednsec<\/em>) per ingressar en el nostre organisme correctament.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"funcions-de-la-vitamina-b12\"><\/span>Funcions de la vitamina B12<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>La vitamina B12 compleix un rol fonamental, juntament amb l<a href=\"https:\/\/www.ecoceutics.com\/ca\/respostes-de-salut\/vitamines\/acid-folic-per-que-es-important\/\">&#8216;\u00e0cid f\u00f2lic<\/a>, en el <em>metabolisme del carboni<\/em>. Entre tots dos, juntament amb una bateria enzim\u00e0tica apropiada, poden moure grups amb carboni d&#8217;una mol\u00e8cula a una altra.\u00a0 Aix\u00ed es transformen amino\u00e0cids, \u00e0cids grassos, i se sintetitza correctament l&#8217;ADN, permetent que la vitamina B12 sigui part integral de:<\/p>\n<ul>\n<li><strong>Desenvolupament de c\u00e8l\u00b7lules sangu\u00ednies.<\/strong><\/li>\n<li><strong>S\u00edntesi de mielina, que \u00e9s la subst\u00e0ncia que recobreix els nervis.<\/strong><\/li>\n<li><strong>S\u00edntesi del neurotransmissor acetilcolina.<\/strong><\/li>\n<li><strong>Correcte desenvolupament fetal i infantil.<\/strong><\/li>\n<li><strong>Manteniment de l&#8217;estructura \u00f2ssia, evitant l&#8217;osteoporosi.<\/strong><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"falta-de-vitamina-b12-que-passa-si-hi-ha-mancanca\"><\/span>Falta de vitamina B12, qu\u00e8 passa si hi ha mancan\u00e7a?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A causa de la gran quantitat de reaccions metab\u00f2liques en qu\u00e8 est\u00e0 involucrada, la <strong>mancan\u00e7a de vitamina B12<\/strong> s&#8217;expressa de m\u00e9s d&#8217;una forma diferent.<\/p>\n<p>Una de les expressions de falta de vitamina B12 \u00e9s l&#8217;an\u00e8mia<em>\u00a0perniciosa<\/em>, una forma d<u>&#8216;<a href=\"https:\/\/www.ecoceutics.com\/ca\/respostes-de-salut\/remeis-naturals\/que-es-lanemia-i-com-tractar-la\/\">an\u00e8mia<\/a><\/u> diferent de l&#8217;an\u00e8mia que es produeix per falta de ferro. El mecanisme d&#8217;aquesta an\u00e8mia est\u00e0 relacionat amb la mala s\u00edntesi d&#8217;ADN quan les c\u00e8l\u00b7lules sangu\u00ednies es formen, generant gl\u00f2buls vermells anormals.<\/p>\n<p>Una altra forma de mancan\u00e7a de vitamina B12 pot causar problemes neurol\u00f2gics deguts a la <strong>p\u00e8rdua de la beina de mielina en els nervis<\/strong>, usualment <em>neuropaties perif\u00e8riques. <\/em>La persona sent un formigueig o canvi de temperatura, sobretot en mans i peus, que no es corresponen amb una causa f\u00edsica. Si els problemes neurol\u00f2gics apareixen en el sistema nervi\u00f3s central, hi pot haver canvis en l&#8217;humor i la mem\u00f2ria. Aquests s\u00edmptomes no tenen per qu\u00e8 apar\u00e8ixer en totes les persones; de vegades predomina l&#8217;an\u00e8mia, de vegades els s\u00edmptomes neurol\u00f2gics.<\/p>\n<p>Quan hi ha un <strong>nivell baix de vitamina B12<\/strong> que no arriba al nivell de mancan\u00e7a cl\u00ednica, pot apar\u00e8ixer homocistein\u00e8mia, igual que quan hi ha mancances de folat. Tamb\u00e9 s&#8217;ha vist que malalties neuronals com l<u>&#8216;<a href=\"https:\/\/www.ecoceutics.com\/ca\/respostes-de-salut\/salut\/alzheimer\/\">Alzheimer<\/a><\/u>, Parkinson, depressi\u00f3, o esclerosi m\u00faltiple cursen amb nivells relativament baixos de vitamina B12 en sang, per\u00f2 no s&#8217;ha demostrat una relaci\u00f3 causal; per ara nom\u00e9s sabem que aquests problemes coexisteixen.<\/p>\n<p>La mancan\u00e7a cl\u00ednica que desemboca en an\u00e8mia i problemes neuronals pot ser dif\u00edcil de tractar, ja que solen apar\u00e8ixer en pacients amb problemes per absorbir la vitamina B12.<\/p>\n<p>A m\u00e9s, tamb\u00e9 poden apar\u00e8ixer efectes secundaris com cansament o fatiga, p\u00e8rdua de l&#8217;apetit, entumiment de les mans, dificultats respirat\u00f2ries, pell p\u00e0l\u00b7lida, fins i tot p\u00e8rdua de mem\u00f2ria.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"suplementacio-amb-vitamina-b12\"><\/span>Suplementaci\u00f3 amb vitamina B12<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>La mancan\u00e7a de B12 per mala dieta no \u00e9s gaire comuna actualment en la poblaci\u00f3 general, ja que la nostra dieta omn\u00edvora actual sol aportar la vitamina B12 di\u00e0ria que necessitem. A m\u00e9s, una bona quantitat d&#8217;aliments estan fortificats amb vitamina B12: derivats lactis, cereals per a l&#8217;esmorzar, sucs, galetes, i altres diversos que es troben en diverses prestatgeries del supermercat tenen una aportaci\u00f3 &#8220;extra&#8221; de vitamina B12 que no estava en els seus ingredients originals.<\/p>\n<p>Tenir un baix nivell del recomanat de vitamina B12 apareix gaireb\u00e9 exclusivament a la poblaci\u00f3 vegana.<strong> Els vegans<\/strong>, que decideixen per voluntat pr\u00f2pia no menjar cap aliment d&#8217;origen animal, no tenen en la seva dieta cap font de vitamina B12, per la qual cosa per evitar problemes de salut han de <strong>prendre vitamina B12 extra<\/strong>.<\/p>\n<p>Altres pacients que necessiten suplementaci\u00f3 amb vitamina B12 s\u00f3n aquells que, per algun motiu de salut estomacal o digestiva, el seu cos no \u00e9s capa\u00e7 de processar l&#8217;absorci\u00f3 de la vitamina B12. En aquest cas <strong>la suplementaci\u00f3 es fa per via intramuscular<\/strong>, ja que per via oral no podria ser aprofitada. En aquesta categoria entren alguns pacients que han utilitzat omeprazol o similars durant anys, pacients amb problemes digestius que no poden secretar les prote\u00efnes de transport necess\u00e0ries, infeccions per <em>Helicobacter pylori <\/em>no tractades, cirurgia bari\u00e0trica (reducci\u00f3 d&#8217;est\u00f3mac) o insufici\u00e8ncia pancre\u00e0tica.<\/p>\n<p>Si vols con\u00e8ixer m\u00e9s sobre on pots trobar B12 en els aliments o la quantitat di\u00e0ria recomanada de vitamina B12 en suplements, no dubtis a consultar-ho amb <u><a href=\"https:\/\/www.ecoceutics.com\/ca\/\">els nostres farmac\u00e8utics<\/a><\/u>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La vitamina B12 o cobalamina \u00e9s una vitamina que cont\u00e9 un \u00e0tom de cobalt al seu centre i est\u00e0 envoltada d&#8217;una estructura org\u00e0nica complexa. Aquesta estructura pot variar en alguns \u00e0toms, donant lloc a diferents formes de vitamina B12. Les formes que es comercialitzen per a consum hum\u00e0 s\u00f3n la cianocobalamina, la metilcobalamina, la hidroxocobalamina [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":17708,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"_mbp_gutenberg_autopost":false,"footnotes":""},"categories":[4,59],"tags":[],"class_list":["post-16336","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-respostes-de-salut","category-vitamines"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Vitamina B12: conseq\u00fc\u00e8ncies de no prendre-la | Ecoceutics<\/title>\n<meta name=\"description\" content=\"Coneix fonts de la vitamina B12, que t\u00e9, qu\u00e8 passa si hi ha mancan\u00e7a d&#039;aquesta vitamina i suplements que pots prendre 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