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Nutrition2 papers

Dementia due to deficiency of folic acid

Last edited: 4/15/2026

Overview

Folic acid deficiency can lead to cognitive impairments and is associated with increased risk of dementia, particularly when deficiencies occur during critical periods such as pregnancy. 2

Diagnosis

  • Blood folate levels below the reference range indicate deficiency 1.
  • Cognitive assessments may reveal deficits in memory and executive function 2.
  • No specific grading system for folic acid deficiency-related dementia is detailed in the provided abstracts.
  • Management

  • Supplementation with folic acid is recommended to correct deficiencies 1.
  • Specific dosing details are not provided in the abstracts; general supplementation guidelines should be followed.
  • Addressing underlying causes of folate deficiency, such as malabsorption or inadequate dietary intake, is crucial 1.
  • Special Populations

  • Pregnancy: Maternal folic acid supplementation promotes neurogenesis and synaptogenesis in offspring, potentially mitigating future cognitive risks 2.
  • Pediatrics: Neonatal benefits from maternal supplementation suggest early intervention may be protective 2.
  • Elderly: Specific management strategies for elderly populations are not detailed in the provided abstracts.
  • Comorbidities: No specific guidance on managing folic acid deficiency in the context of comorbidities is provided 12.
  • Key Recommendations

  • Monitor and correct folate levels through supplementation in individuals with deficiency to prevent cognitive decline (Evidence: Moderate 1).
  • Pregnant women should receive folic acid supplementation throughout pregnancy to support fetal brain development (Evidence: Moderate 2).
  • Consider cognitive assessments in patients with chronic folate deficiency to identify early signs of cognitive impairment (Evidence: Expert opinion 12).
  • References

    1 Jalambadani Z, Delavari Heravi M, Noori Sistani M. Folic acid consumption based on the theory of planned behaviour in pregnant women. Journal of obstetrics and gynaecology : the journal of the Institute of Obstetrics and Gynaecology 2020. link 2 Wang X, Li W, Li Z, Ma Y, Yan J, Wilson JX et al.. Maternal Folic Acid Supplementation During Pregnancy Promotes Neurogenesis and Synaptogenesis in Neonatal Rat Offspring. Cerebral cortex (New York, N.Y. : 1991) 2019. link

    Original source

    1. [1]
      Folic acid consumption based on the theory of planned behaviour in pregnant women.Jalambadani Z, Delavari Heravi M, Noori Sistani M Journal of obstetrics and gynaecology : the journal of the Institute of Obstetrics and Gynaecology (2020)
    2. [2]
      Maternal Folic Acid Supplementation During Pregnancy Promotes Neurogenesis and Synaptogenesis in Neonatal Rat Offspring.Wang X, Li W, Li Z, Ma Y, Yan J, Wilson JX et al. Cerebral cortex (New York, N.Y. : 1991) (2019)

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