2015
DOI: 10.12809/hkmj144383
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Vitamin B12 deficiency in the elderly: is it worth screening?

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Cited by 85 publications
(157 citation statements)
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“…In older patients (>65 years) functional cobalamin deficiency was found in 10–30% of all cases [2, 3]. Frequently, the diagnosis of cobalamin deficiency is difficult, because anaemia or macrocytosis are frequently absent, cobalamin concentrations are mostly borderline [4], and solely psychiatric syndromes are present which are sometimes variable, unspecific, subtle, and uneven in rate [5, 6]. Therefore, the exact prevalence of clinically significant cobalamin deficiency is not known [7].…”
Section: Introductionmentioning
confidence: 99%
“…In older patients (>65 years) functional cobalamin deficiency was found in 10–30% of all cases [2, 3]. Frequently, the diagnosis of cobalamin deficiency is difficult, because anaemia or macrocytosis are frequently absent, cobalamin concentrations are mostly borderline [4], and solely psychiatric syndromes are present which are sometimes variable, unspecific, subtle, and uneven in rate [5, 6]. Therefore, the exact prevalence of clinically significant cobalamin deficiency is not known [7].…”
Section: Introductionmentioning
confidence: 99%
“…Нередко пернициозная анемия сочетается с другими аутоиммунными заболеваниями (сахарный диабет 1-го типа, аутоиммунный тиреоидит). Синдром мальабсорбции витамина В 12 описан в 1995 г. и характеризуется неспособностью к высвобождению витамина В 12 из пищи или связанного с ним протеина, ассоциируется с полипрагмазией (прежде всего с приемом бигуанидов и антацидов) и H. pilory [20].…”
Section: макроцитарные анемииunclassified
“…Обычно в клинической картине у гериатрических пациентов с В 12 -дефицитной анемией преобладают проявления анемического синдрома, значительно реже имеются признаки глоссита (пощипывание языка) и поражения нервной системы: нарушения чувствительности, которые пациенты обычно описывают как «хождение по мягкому ковру» (фуникулярный миелоз). В то же время на ранней стадии заболевания при незначительном снижении концентрации гемоглобина и витамина В 12 в клинической картине могут преобладать когнитивные нарушения, которые нивелируются при назначении препаратов витамина В 12 [18,20]. В связи с относительно медленным развитием заболевания пациенты нередко обращаются к врачу с крайне тяжелой степенью анемии: при уровне гемоглобина менее 30-40 г/л и количестве эритроцитов менее 1-1,5 · 10 12 /л.…”
Section: макроцитарные анемииunclassified
“…Vitamin B 12 deficiency can be a cause of acute reversible parkinsonism and cognitive impairment in older adults Dear Editor, Vitamin B 12 deficiency is common in older adults and tends to increase with age, due to the inadequate dietary intake and impaired absorption of vitamin B 12 because of atrophic gastritis, bacterial overgrowth or long-term use of medications for comorbidities, including proton pump inhibitors and metformine. 1 Up to now, much evidence is available showing that vitamin B 12 deficiency is associated with many neurological disorders, such as dementia, ataxia, paraesthesia, weakness, gait abnormalities, peripheral neuropathy, psychosis, mood disorders and so on. 1 In contrast, parkinsonian signs are common among older adults, with prevalence estimates that range from 15% to 40%.…”
mentioning
confidence: 99%
“…1 Up to now, much evidence is available showing that vitamin B 12 deficiency is associated with many neurological disorders, such as dementia, ataxia, paraesthesia, weakness, gait abnormalities, peripheral neuropathy, psychosis, mood disorders and so on. 1 In contrast, parkinsonian signs are common among older adults, with prevalence estimates that range from 15% to 40%. 2 Although both vitamin B 12 deficiency and parkinsonism increase with age, the coexistence of them is exceedingly rare in elderly patients.…”
mentioning
confidence: 99%