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B12 and folate deficiency dementia.

D C Martin1

  • 1Section of Geriatric Medicine, University of Pittsburgh School of Medicine, Pennsylvania.

Clinics in Geriatric Medicine
|November 1, 1988
PubMed
Summary

Vitamin B12 and folate deficiencies are linked to dementia. Incorrectly treating one deficiency with the other can worsen neurological issues, highlighting the need for accurate diagnosis and management.

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Area of Science:

  • Neurology
  • Nutritional Science
  • Geriatrics

Background:

  • Vitamin B12 and folate deficiencies are associated with dementia.
  • Neurological symptoms of vitamin B12 deficiency can appear before hematological changes.
  • Iron deficiency often co-occurs with B12 and folate deficiencies.

Purpose of the Study:

  • To review the relationship between vitamin B12, folate, and dementia.
  • To highlight potential complications of treating these deficiencies.
  • To discuss the management of borderline B12 deficiency.

Main Methods:

  • Literature review on vitamin B12 and folate deficiencies and their neurological impact.
  • Analysis of clinical presentations and treatment outcomes.
  • Biochemical assessment of borderline deficiency states.

Main Results:

  • Neurologic consequences of B12 deficiency can precede hematologic findings.
  • Concomitant treatment of B12 and folate deficiencies can exacerbate neurological damage.
  • Iron deficiency is a common comorbidity.
  • Borderline B12 deficiency may present with biochemical evidence of megaloblastosis.

Conclusions:

  • Accurate diagnosis of B12 and folate deficiencies is crucial to prevent worsening neurological outcomes.
  • Careful management, including monitoring for iron deficiency, is necessary during replacement therapy.
  • Vitamin B12 replacement is recommended for patients with borderline deficiency exhibiting megaloblastosis.

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