Cited by 33Bipolar Disorder and TreatmentFolate and B Vitamins ResearchSchizophrenia research and treatment

Serum folate levels in bipolar disorder: a systematic review and meta-analysis

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Hsieh, Yung-Chi, Chou, Li-Shiu, Lin, Ching-Hua, Wu, Hung-Chi, Li, Dian-Jeng, Tseng, Ping-Tao·2019·BMC Psychiatry

Abstract

Background: Bipolar disorder (BD) is a major psychiatric illness, however its physiopathology is unclear. The role of folate in the physiopathology of BD is controversial. We conducted this systematic review and meta-analysis to investigate the effect of folate in BD patients. Methods: We performed a thorough literature study of the PubMed, Embase, ScienceDirect, ClinicalKey, Cochrane Library, ProQuest, Web of Science, and ClinicalTrials.gov databases until December 21st, 2018. Random effects meta-analysis was conducted. Results: Six articles involving 481 patients with BD and 760 controls were included. The meta-analysis results suggested that serum folate levels in the patients with BD were significantly lower than those in the controls (Hedges’ g = − 0.211, 95% confidence interval = − 0.391 to − 0.031, p = 0.021). Conclusion: The current meta-analysis show it might be association between lower serum folate levels and patient with BD. However, we could not distinguish the potentially confounding effects of mood states on the folate levels. Further prospective studies including subjects with different mood states and possible physiopathology are warranted to investigate the association between folate deficiency and the etiology of BD.

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Authors
Hsieh, Y.-C., Chou, L.-S., Lin, C.-H., Wu, H.-C., Li, D.-J., & Tseng, P.-T.
Affiliations
Kaohsiung Municipal Kai-Syuan Psychiatric Hospital (TW)
Corresponding author
  • Li, Dian-Jeng
  • Tseng, Ping-Tao
Venue
BMC Psychiatry
Published
2019-10-22
Volume
19
Issue
1
Pages
305-305
ISSN
1471-244X (ISSN-L)
OpenAlex
W2982072312
Cited by
33
References
63
Citations by year
2026: 2 · 2025: 9 · 2024: 6 · 2023: 4 · 2022: 5 · 2021: 5 · 2020: 2
FWCI
0.51
Type
journal article
Language
en
Open access
Locations
  • BMC Psychiatry (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Bipolar Disorder and Treatment
  • Health Sciences › Medicine › Rheumatology › Folate and B Vitamins Research
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
Keywords
bipolar disorder, serum folate, folate deficiency, folate metabolism, pathophysiology, mood states, folic acid
MeSH terms
Bipolar Disorder, Female, Folic Acid, Humans, Male, Nutritional Status

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