VITAMINA B12 Y VEGETARIANOS ESTRICTOS (VEGANOS). UNA NUEVA VISIÓN DE LA FISIOLOGÍA, BIOSÍNTESIS BACTERIANA INTESTINAL Y ABSORCIÓN DE LA VITAMINA B12 EN EL ÍLEON TERMINAL.
In this article, the authors highlight that, contrary to what has been believed until recently, the strictly vegetarian population whose diet is based on plants (vegetables, greens, whole grains, legumes, fruits, seeds, and seaweed), typical of temperate or mediterranean climate, does not suffer fro...
| Published in: | Medicina Naturista Vol. 20; no. 1; pp. 23 - 38 |
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| Main Authors: | , |
| Format: | Article |
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Sociedad Europea de Medicina Naturista Clasica (Seccion Espanola)
ene-jun2026
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=lth&AN=191957863&site=ehost-live header: @attributes: shortDbName: lth uiTerm: 191957863 longDbName: MedicLatina uiTag: AN controlInfo: bkinfo: jinfo: jid: 15763080 3GVY jtl: Medicina Naturista issn: 15763080 maglogo: N pubinfo: dt: ene-jun2026 vid: 20 iid: 1 pid: 36550 pub: Sociedad Europea de Medicina Naturista Clasica (Seccion Espanola) artinfo: ui: 191957863 ppf: 23 ppct: 15 formats: fmt: @attributes: type: P size: 3.6MB tig: atl: VITAMINA B12 Y VEGETARIANOS ESTRICTOS (VEGANOS). UNA NUEVA VISIÓN DE LA FISIOLOGÍA, BIOSÍNTESIS BACTERIANA INTESTINAL Y ABSORCIÓN DE LA VITAMINA B12 EN EL ÍLEON TERMINAL. aug: au: Silva Jaramillo, Pedro Silva Manríquez, P. Andrés affil: Médico internista, neurólogo, Máster en Nutrición INTA, Médico Naturista, Chile. Nutricionista clínico, Hospital Dr. Juan Morey, Chile. su: Vitamin B12 Vegans Microbiological synthesis Small intestine Bifidobacterium Lactobacillus Vegetarians sug: subj: Vitamin B12 Vegans Microbiological synthesis Small intestine Bifidobacterium Lactobacillus Vegetarians keyword: absorption bacterial biosynthesis bifidus factor terminal ileum vegans vegetarians íleon terminal absorción biosíntesis bacteriana factor bífidus veganos vegetarianos Vitamina B12 ab: In this article, the authors highlight that, contrary to what has been believed until recently, the strictly vegetarian population whose diet is based on plants (vegetables, greens, whole grains, legumes, fruits, seeds, and seaweed), typical of temperate or mediterranean climate, does not suffer from vitamin B12 deficiency. They propose that, similar to herbivorous animals, vitamin B12 is mainly provided by bacterial biosynthesis occurring in the small intestine, especially in the ileum, thanks to acidophilic microbiota (bifidobacteria and lactobacilli) that colonize the small intestine early in life. This function is supported by prolonged breastfeeding, emphasizing the importance of the bifidus factor that promotes the growth of bifidobacteria. It is significant that vitamin B12 absorption occurs precisely in the terminal ileum. In other words, in strict vegetarians, the vitamin is absorbed in the same place where it is produced. En este artículo, los autores ponen en evidencia que, contrariamente a lo sostenido hasta fecha reciente, la población vegetariana estricta, con una dieta basada en plantas (verduras, hortalizas, cereales y granos integrales, leguminosas, frutas, semillas y algas marinas), propia de los países de clima templado o mediterráneo, no adolecen de deficiencia de vitamina B12. Postulan que, al igual que en los animales herbívoros, ésta es provista principalmente por biosíntesis bacteriana, que se desarrolla en el intestino delgado, especialmente en el íleon por la microbiota acidófila (bífidobacterias y lactobacilus), que colonizan tempranamente el intestino delgado, función favorecida por la lactancia materna prolongada, destacando la importancia del factor bífidus que promueve el crecimiento de las bífidobacterias. Es significativo que la absorción de la vitamina B12 ocurre precisamente en el íleon terminal. Vale decir, en los vegetarianos estrictos, la vitamina se absorbe en el lugar donde se produce. pubtype: Academic Journal doctype: Article src: R language: Spanish refInfo: copyright: @attributes: flag: Y custom: Copyright of Medicina Naturista is the property of Sociedad Europea de Medicina Naturista Clasica (Seccion Espanola) and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. item: Medicina Naturista holder: Sociedad Europea de Medicina Naturista Clasica (Seccion Espanola) dt: @attributes: year: 2026 holdings: @attributes: islocal: N |
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