{"id":17407,"date":"2025-07-14T12:52:15","date_gmt":"2025-07-14T10:52:15","guid":{"rendered":"https:\/\/www.pharmanutra.it\/?p=17407"},"modified":"2025-07-14T14:57:47","modified_gmt":"2025-07-14T12:57:47","slug":"vitamin-b12-deficiency-sidevit-supplement","status":"publish","type":"post","link":"https:\/\/www.pharmanutra.it\/en\/vitamin-b12-deficiency-sidevit-supplement\/","title":{"rendered":"Vitamin B12 deficiency: from cause to solution"},"content":{"rendered":"\n<p>La <strong>vitamina B12<\/strong>, o <em>cobalamina<\/em>, \u00e8 una <strong>vitamina idrosolubile essenziale<\/strong> per la formazione della mielina, la maturazione dei globuli rossi e la sintesi degli acidi nucleici. Viene sintetizzata esclusivamente da batteri ed \u00e8 disponibile attraverso il <strong>consumo di alimenti di origine animale<\/strong>: uova, latte e derivati, carne rossa e pollame, pesce e frutti di mare.<\/p>\n\n<p>Poich\u00e9 il nostro microbiota intestinale non \u00e8 in grado di produrre vitamina B12 in quantit\u00e0 sufficiente, il fabbisogno quotidiano <strong>varia con l\u2019et\u00e0 e lo stato fisiologico<\/strong>. \u00c8 pertanto essenziale seguire <strong>una dieta equilibrata<\/strong> <strong>e<\/strong>, quando necessario, <strong>integrare<\/strong> l\u2019alimentazione con prodotti a base di vitamina B12 per via orale.<sup>1<\/sup><\/p>\n\n<h2 class=\"wp-block-heading\">Cause della carenza di vitamina B12<\/h2>\n\n<p>La carenza di vitamina B12 pu\u00f2 derivare da:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Apporto alimentare insufficiente (diete vegetariane, vegane, malnutrizione);<\/li>\n\n\n\n<li>Invecchiamento;<\/li>\n\n\n\n<li>Gravidanza;<\/li>\n\n\n\n<li>Alcolismo cronico;<\/li>\n\n\n\n<li>Condizioni patologiche come la gastrite atrofica autoimmune o interventi di chirurgia bariatrica.<\/li>\n<\/ul>\n\n<p>In questi casi, l\u2019assorbimento intestinale della B12 risulta compromesso.<sup>2<\/sup><\/p>\n\n<h2 class=\"wp-block-heading\">Diagnosi della carenza<\/h2>\n\n<p>La diagnosi si basa sull\u2019emocromo e sul dosaggio sierico della vitamina B12. <strong>Valori inferiori a 200 pg\/mL indicano una carenza<\/strong>, mentre tra 200 e 300 pg\/mL si parla di <em>\u201czona grigia\u201d<\/em>, che richiede approfondimenti. Per avere un quadro clinico pi\u00f9 chiaro si possono valutare ulteriori marker:<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Omocisteina<\/strong>: aumenta in caso di carenza di B12 ma anche di acido folico; <\/li>\n\n\n\n<li><strong>Acido metilmalonico<\/strong>: pi\u00f9 specifico, aumenta solo in caso di carenza di vitamina B12.<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\">Quando il rischio aumenta: dieta e farmaci<\/h2>\n\n<p>In questo articolo, analizzeremo due contesti clinicamente rilevanti per la carenza di vitamina B12: da una parte, le <strong>diete vegetariane e vegane<\/strong>; dall&#8217;altra, <strong>l&#8217;utilizzo di farmaci antiacidi<\/strong>, con l&#8217;obiettivo di evidenziare i fattori di rischio e le possibili strategie preventive.<\/p>\n\n<p><strong>1. Diete vegetariane e vegane<br\/><\/strong>Questi regimi alimentari escludono carni e prodotti ittici. Le principali tipologie sono:<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Latto-ovo-vegetarianesimo (LOV)<\/strong>: include latticini, uova e miele;<\/li>\n\n\n\n<li><strong>Latto-vegetarianesimo (LV)<\/strong>: esclude le uova;<\/li>\n\n\n\n<li><strong>Ovo-vegetarianesimo (OV)<\/strong>: esclude i latticini;<\/li>\n\n\n\n<li><strong>Veganismo (VEG)<\/strong>: esclude tutti i derivati animali, compreso il miele.<\/li>\n<\/ul>\n\n<p>Tra le varie carenze nutrizionali spesso riscontrate in questi regimi dietetici, troviamo la carenza di Vitamina B12; infatti, la biodisponibilit\u00e0 della vitamina B12 in una dieta vegetariana dipende dalla quantit\u00e0 e dalla tipologia di alimenti animali consumati (latticini, uova), dal consumo di alimenti fortificati (es. cereali da colazione) e di integratori. Per i vegani, invece, l\u2019unica fonte affidabile di vitamina B12 sono gli alimenti fortificati e gli integratori alimentari.<sup>4<\/sup><\/p>\n\n<p><strong>2. Uso di farmaci antiacidi<br\/><\/strong>I farmaci che riducono l\u2019acidit\u00e0 gastrica rappresentano una classe di medicinali ampiamente prescritta, indicata nel trattamento di disturbi comuni come il reflusso gastroesofageo, la gastrite e l\u2019ulcera peptica. Tra questi rientrano gli <strong>antiacidi classici<\/strong> (ad esempio l\u2019idrossido di magnesio), gli <strong>antagonisti dei recettori H2<\/strong> (come la cimetidina) e gli <strong>inibitori della pompa protonica<\/strong> (IPP), tra cui l\u2019omeprazolo. <br\/>L\u2019impiego di questi farmaci, sebbene efficace nel controllo dei sintomi legati all\u2019iperacidit\u00e0, pu\u00f2 incidere negativamente sull\u2019assorbimento di alcuni nutrienti, in particolare della vitamina B12.<\/p>\n\n<p>La carenza \u00e8 particolarmente frequente tra gli anziani (5-40%) e aumenta con l\u2019avanzare dell\u2019et\u00e0.<sup>5<\/sup> <br\/>In et\u00e0 avanzata, la ridotta secrezione acida comporta:<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Ridotto rilascio della vitamina B12<\/strong> dalle proteine alimentari;<\/li>\n\n\n\n<li><strong>Aumento del pH intestinale e proliferazione batterica<\/strong>, che riducono ulteriormente la disponibilit\u00e0 di cobalamina per l\u2019organismo;<\/li>\n\n\n\n<li><strong>Peggioramento dell\u2019assorbimento intestinale<\/strong>.<\/li>\n<\/ul>\n\n<p>Una carenza protratta di vitamina B12 pu\u00f2 causare <strong>sintomi ematologici, neurologici e cognitivi<\/strong>. Nei pazienti geriatrici che assumono cronicamente farmaci antiacidi e che sono gi\u00e0 predisposti a una ridotta capacit\u00e0 di assorbimento legata all\u2019invecchiamento, una valutazione periodica della vitamina B12 \u00e8 fortemente raccomandata.<sup>6<\/sup><\/p>\n\n<h2 class=\"wp-block-heading\">Vitamina B12 Sucrosomiale\u00ae: una soluzione innovativa<\/h2>\n\n<p><strong><a href=\"https:\/\/sidevit.it\/\" target=\"_blank\" rel=\"noreferrer noopener\">Sidevit\u00ae B12<\/a><\/strong> \u00e8 l\u2019unico integratore alimentare a base di <strong>Vitamina B12 Sucrosomiale\u00ae<\/strong> e acido folico attivo, disponibile in pratiche bustine orosolubili da assumere una volta al giorno, sotto consiglio medico. <br\/>La <strong>Vitamina B12 Sucrosomiale<sup>\u00ae<\/sup><\/strong> \u00e8 una formulazione innovativa, che racchiude le molecole di cobalamina in una matrice di fosfolipidi ed esteri saccarici degli acidi grassi (<em>Sucrosoma<sup>\u00ae<\/sup><\/em>), in grado di:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Proteggere il principio attivo dalla degradazione nello stomaco;<\/li>\n\n\n\n<li>Favorire l\u2019assorbimento intestinale;<\/li>\n\n\n\n<li>Migliorare la biodisponibilit\u00e0 complessiva della vitamina.<sup>7<\/sup><\/li>\n<\/ul>\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"929\" src=\"https:\/\/www.pharmanutra.it\/wp-content\/uploads\/2025\/07\/sucrosoma_ultrab12-1024x929.png\" alt=\"\" class=\"wp-image-17404\" srcset=\"https:\/\/www.pharmanutra.it\/wp-content\/uploads\/2025\/07\/sucrosoma_ultrab12-1024x929.png 1024w, https:\/\/www.pharmanutra.it\/wp-content\/uploads\/2025\/07\/sucrosoma_ultrab12-300x272.png 300w, https:\/\/www.pharmanutra.it\/wp-content\/uploads\/2025\/07\/sucrosoma_ultrab12-768x697.png 768w, https:\/\/www.pharmanutra.it\/wp-content\/uploads\/2025\/07\/sucrosoma_ultrab12-1536x1394.png 1536w, https:\/\/www.pharmanutra.it\/wp-content\/uploads\/2025\/07\/sucrosoma_ultrab12-2048x1859.png 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Figura 1. Vitamina B12 Sucrosomiale<sup>\u00ae<\/sup><\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p>Grazie al suo sistema di assorbimento avanzato che consente un\u2019ottima biodisponibilit\u00e0 nell\u2019organismo<strong>, Sidevit<sup>\u00ae<\/sup> B12<\/strong> rappresenta una valida opzione per contrastare la carenza di vitamina B12, anche nei soggetti con alterato assorbimento intestinale.<\/p>\n<\/div>\n<\/div>\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n<p><strong><em>Bibliografia<\/em><\/strong><\/p>\n\n<ol class=\"wp-block-list\">\n<li>Otten J.J., et al; <em>Dietary Reference Intakes: The Essential Guide to Nutrient Requirements.<\/em> Institute of Medicine of the National Academies; Washington, DC, USA: <strong>2006<\/strong>.<\/li>\n\n\n\n<li>Shipton MJ, Thachil J. Vitamin B12 deficiency &#8211; A 21st century perspective. Clin Med (Lond). <strong>2015<\/strong>.<\/li>\n\n\n\n<li>Nielsen MJ, et al.; <em>Vitamin B<sub>12<\/sub>\u00a0transport from food to the body&#8217;s cells &#8211; A sophisticated, multistep pathway<\/em>. Nat Rev Gastroenterol Hepatol <strong>2012<\/strong>.<\/li>\n\n\n\n<li>Rizzo G, et al. <em>Vitamin B12 among Vegetarians: Status, Assessment and Supplementation<\/em>. Nutrients <strong>2016<\/strong>.<\/li>\n\n\n\n<li>Cena H, Alessandra Vincenti A. <em>Il rischio di carenza di vitamina B12 nella popolazione over 50-60 anni e il ruolo dell&#8217;integrazione<\/em>. Rivista SIMG <strong>2020<\/strong>;27(4):54-58.<\/li>\n\n\n\n<li>Maes ML, et al. <em>Adverse effects of proton-pump inhibitor use in older adults: a review of the evidence<\/em>. Ther Adv Drug Saf. <strong>2017<\/strong>.<\/li>\n\n\n\n<li>Memon NM, et al. <em>Comparative bioavailability study of supplemental oral Sucrosomial\u00a0<strong>\u00ae<\/strong>\u00a0vs. oral conventional vitamin B12 in enhancing circulatory B12 levels in healthy deficient adults: a multicentre, double-blind randomized clinical trial<\/em>. Front Nutr. <strong>2024<\/strong>.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>La vitamina B12, o cobalamina, \u00e8 una vitamina idrosolubile essenziale per la formazione della mielina, la maturazione dei globuli rossi e la sintesi degli acidi nucleici. Viene sintetizzata esclusivamente da batteri ed \u00e8 disponibile attraverso il consumo di alimenti di origine animale: uova, latte e derivati, carne rossa e pollame, pesce e frutti di mare. [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":17403,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100,1],"tags":[118,124,128],"anno_documento":[80],"class_list":["post-17407","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-minerals-and-vitamins","category-senza-categoria","tag-gastroenterology","tag-internal-medicine-and-geriatrics","tag-nutrition-and-metabolism","anno_documento-80"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.1.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Vitamin B12 Deficiency: causes, diagnosis and effective solutions<\/title>\n<meta name=\"description\" content=\"Learn about the causes and diagnosis of vitamin B12 deficiency, and how to manage it effectively with SideVit\u00ae B12.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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