2012
DOI: 10.1017/s1041610211002511
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Cognitive impairment and vitamin B12: a review

Abstract: Low serum vitamin B12 levels are associated with neurodegenerative disease and cognitive impairment. There is a small subset of dementias that are reversible with vitamin B12 therapy and this treatment is inexpensive and safe. Vitamin B12 therapy does not improve cognition in patients without pre-existing deficiency. There is a need for large, well-resourced clinical trials to close the gaps in our current understanding of the nature of the associations of vitamin B12 insufficiency and neurodegenerative diseas… Show more

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Cited by 187 publications
(129 citation statements)
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References 86 publications
(92 reference statements)
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“…Moore et al [9] showed that low serum levels of vitamin B12 are associated with neurodegenerative disease and cognitive impairment and that vitamin B12 therapy does not improve cognition in patients without preexisting deficiency. This result was not confirmed by Coppedè et al [37], who reported that differences in serum vitamin B12 levels between AD cases ( = 378) and non-demented controls ( = 308) did not reach statistical significance.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…Moore et al [9] showed that low serum levels of vitamin B12 are associated with neurodegenerative disease and cognitive impairment and that vitamin B12 therapy does not improve cognition in patients without preexisting deficiency. This result was not confirmed by Coppedè et al [37], who reported that differences in serum vitamin B12 levels between AD cases ( = 378) and non-demented controls ( = 308) did not reach statistical significance.…”
Section: Discussionmentioning
confidence: 99%
“…Even the subclinical low normal range of B12 levels (<250 pmol/L) is associated with AD, vascular dementia, and Parkinson's disease [9]. An association between AD and a low concentration of serum vitamin B12 has been described [9].…”
Section: Introductionmentioning
confidence: 99%
“…В целом результаты анализа 43 исследований, по-священных изучению эффективности применения цианокобаламина при различных видах деменции и когнитивного снижения (болезни Альцгеймера, Пар-кинсона, сосудистая деменция, метаболические рас-стройства) показали эффективность его применения в первую очередь в тех случаях, когда имело место ис-ходное снижение его концентрации в сыворотке крови менее 150 пмоль / л [10]. Следует отметить методологи-ческую сложность выявления когнитивных наруше-ний, обусловленных дефицитом цианокобаламина, -его концентрация в сыворотке крови может быть нормальной, что создает ложное впечатление об от-сутствии нарушений его метаболизма, тогда как со-держание в эритроцитах оказывается значительно сни-женным.…”
Section: дефицит витамина в 12unclassified
“…El pobre estado nutricional es reconocido como un factor contribuyente y recientemente el rol de la vitamina B12 en el envejecimiento ha atraído una considerable atención , aparte de las características clínicas de la deficiencia de B12, evidencia emergente indican que deficiencias subclínicas de la misma puede estar implicado en diversas enfermedades crónicas relacionadas con la edad (1) . La deficiencia de vitamina B12 ha sido altamente vinculadas a diversos desordenes psiquiátricos, como pérdida de memoria, irritabilidad, depresión, demencia, delirium, esquizofrenia y psicosis (2) . Otras manifestaciones comúnmente asociadas incluyen manifestaciones neurológicas, como parestesias, entumecimiento, y degeneración subaguda combinada de la médula espinal (3) .…”
Section: Introductionunclassified