An association between depression and folate status

The gap

Evidence profile

Sourced from the stated challenges and future-work section and stated research gap and abstract of the source papers, classified as general, drawn from work published between 2003 and 2026, spanning 5 journals. Those papers have been cited 409 times in total.

Supporting evidence — 6 representative gaps

• The Association Between Vitamin D Status and Depression Severity in Adults with Major Depressive Disorder: A Cross-Sectional Study (2026) · International Journal of Molecular Sciences · doi

  The study faces challenges in terms of the limited data on the association between vitamin D status and depression severity in the Romanian population. The study faces challenges in terms of the complexity of major depressive disorder and the limitations of conventional pharmacotherapy. The study does not explicitly state other specific technical or domain challenges.

  generalstated challenges
  Keywords: study faces challenges terms limited data association between
• The Role of Water-Soluble Vitamins and Vitamin D in Prevention and Treatment of Depression and Seasonal Affective Disorder in Adults (2024) · Nutrients · cited 35× · doi

  Further investigation is needed to understand the mechanisms of vitamins in depression treatment, - More research on SAD and light therapy's efficacy and underlying mechanisms involving photoreceptors, enzymes, and immune markers is needed, - Future research is needed to examine the therapeutic role of dietary vit D intake in patients diagnosed with SAD

  generalfuture-work section
  Keywords: further investigation needed understand mechanisms vitamins depression treatment
• The Role of Water-Soluble Vitamins and Vitamin D in Prevention and Treatment of Depression and Seasonal Affective Disorder in Adults (2024) · Nutrients · cited 35× · doi

  There is a lack of understanding of the mechanisms of vitamins in depression treatment. Further research is needed to clarify the role of B vitamins, vitamin C, and vitamin D in preventing and treating depression. The paper identifies the need for more research on the therapeutic role of dietary vitamin D intake in patients diagnosed with Seasonal Affective Disorder.

  generalstated research gap
  Keywords: there lack understanding mechanisms vitamins depression treatment further
• ‘D’ for depression: any role for vitamin D? (2011) · Acta Psychiatrica Scandinavica · cited 54× · doi

  CONCLUSION: There is currently insufficient evidence to argue strongly for vitamin D supplementation in patients with depression, but such a strategy is worthy of consideration in depressed patients whose lifestyle and geographical residence may indicate a risk of vitamin D insufficiency--or where low vitamin D levels have been quantified.

  generalabstractevidence 5/5
  Keywords: vitamin patients conclusion there currently insufficient evidence argue strongly supplementation depression strategy worthy consideration depressed
• Folate, Vitamin B12, Homocysteine, and the MTHFR 677C→T Polymorphism in Anxiety and Depression (2003) · Archives of General Psychiatry · cited 285× · doi

  BACKGROUND: An association between depression and folate status has been demonstrated in clinical studies, whereas data are sparse on the relationship between depression and other components of 1-carbon metabolism such as vitamin B12, homocysteine, and the methylenetetrahydrofolate reductase 677C-->T polymorphism.

  generalabstractevidence 5/5
  Keywords: depression background association folate status clinical sparse relationship components carbon metabolism vitamin homocysteine methylenetetrahydrofolate reductase
• Association Between Low Vitamin D Levels and Depression: A Systematic Review and Meta-Analysis (2026) · Cureus · doi

  Further studies are needed to investigate the causal relationship between vitamin D deficiency and depression risk. Studies should aim to reduce reverse-causation bias by using longitudinal designs and multivariable-adjusted analyses. The development of effective interventions to address vitamin D deficiency in patients with depression is needed.

  generalfuture-work sectionevidence 4/5
  Keywords: further studies needed investigate causal relationship between vitamin

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