Improvement after a supplement is not the same as a comparative result
Start with the comparison. A before-and-after change alone cannot isolate the contribution of an ingredient.
Folate
Selected research topic
Stress and mood
Confirmed comparison evidence for this topic is limited. The findings below retain their study conditions.
Some publications still need interpretation checks and are kept separate from the findings below.
- Publications for this topic
- 4
- Human comparison publications
- 0
- Publications needing review
- 2
Findings in the studies
depressive symptoms
Research with unclear study subject or type
- The study reported improvement in this measurement.Single ingredient
Measurement and study conditions
- Study type
- Meta-analysis
- Study population
- Recorded population category: Patient group. Whether the research involved humans needs confirmation.
- Ingredients tested
- Single ingredient
- How results were compared
- Results were compared between groups. · Study comparison: adjunctive folate versus placebo for MDD depressive symptoms
- Measurement time
- unspecified across included trials
Hamilton Depression Rating Scale (HAM-D) score
Research with unclear study subject or type
- The study reported improvement in this measurement.
What the comparison group used was not confirmed.
Measurement and study conditions
- Study type
- Meta-analysis
- Study population
- Recorded population category: Patient group. Whether the research involved humans needs confirmation.
- Ingredients tested
- Unknown intervention
- How results were compared
- Results were compared between groups.
- Measurement time
- Not confirmed.
total psychopathology
Research with unclear study subject or type
- No clear difference in this measurement was found between the compared groups.Single ingredient
Measurement and study conditions
- Study type
- Meta-analysis
- Study population
- Recorded population category: Patient group. Whether the research involved humans needs confirmation.
- Ingredients tested
- Single ingredient
- How results were compared
- Results were compared between groups. · Study comparison: adjunctive folate versus placebo for schizophrenia psychopathology outcomes
- Measurement time
- unspecified across included trials
This result is held for interpretation. That does not mean research found no effect.
Outcome groups needing additional review (1)
- BDI-II · Distinct papers needing additional review: 1Evidence criteria check: 1
One paper can appear under multiple measured outcomes or review reasons, so these counts should not be added together.
Representative outcome and study details
Studies with an unspecified organism reported between-group improvement in depressive symptoms.
Single-ingredient studies · Includes patient groups · between-group comparison
1 publications linked to this result
- Route, form, dose, or population details are incomplete, so the findings cannot be confirmed as directly comparable.
Data coverage and detailed study classifications
Paper counts are separated by research topic below. One paper may contribute to multiple findings.
Analysis status: Public-ready
Ingredient analysis date:
How the grade was determined: B
The 58.7 evidence score includes 0 independent human studies and 0 clinical studies in the representative benefit area. The B tier remains conservative because of limited repetition across independent human clinical studies, too few clinical findings with an explicit effect direction.
The grade is based mainly on the research area with the most evidence. It does not mean the same result was found in other areas.
Papers linked to this ingredient overall: 94
Papers linked to this topic 4 · distinct papers 4 · comparison findings need further review · papers needing additional review 2
A publication may appear in more than one count. These numbers should not be added. Ingredient-wide papers, topic-linked papers, and sources in outcome groups use different scopes. Adding source counts may count the same paper more than once.
- BDI-II: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- depressive symptoms: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- Hamilton Depression Rating Scale (HAM-D) score: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
- total psychopathology: Sources represented in this measurement group: 1 · Distinct papers with human comparisons for this outcome: 0
What the research found
depressive symptoms
The study reported improvement in this measurement.
Meta-analysis · Single ingredient · Patient group
Between-group comparison
Analysis coverage and paper counts
1 paper · 1 measured outcome
Review overlap with primary papers is unknown; counts stay separate.
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
Hamilton Depression Rating Scale (HAM-D) score
The study reported improvement in this measurement.
Meta-analysis · Unknown intervention · Patient group
Between-group comparison
Analysis coverage and paper counts
1 paper · 1 measured outcome
Review overlap with primary papers is unknown; counts stay separate.
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
total psychopathology
No clear difference in this measurement was found between the compared groups.
Meta-analysis · Single ingredient · Patient group
Between-group comparison
Analysis coverage and paper counts
1 paper · 1 measured outcome
Review overlap with primary papers is unknown; counts stay separate.
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
BDI-II
The study needs further checking before its result can be interpreted.
Controlled study in people · Separable contribution · Patient group
Between-group comparison
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
Unspecified measured outcome
The study needs further checking before its result can be interpreted.
Review · Unknown intervention · Unspecified population
The comparison could not be confirmed.
Analysis coverage and paper counts
1 paper · 1 measured outcome
1 papers held from direction counts
Review overlap with primary papers is unknown; counts stay separate.
Direction counts are distinct papers within each row. Outcome contributions count endpoint results, so one paper may contribute more than once.
How to read research findings
How should I read research findings?
Research guidesNo clear difference and an uninterpretable result are different
A reported null comparison contains a result. An abstract without an interpretable comparison leaves a question unresolved.
Paper counts and study counts are different
Count original research separately from research that reanalyzes it. Publication volume is neither replication nor a quality rating.
Side effects and combination findings
Findings from this ingredient alone are shown separately from those involving another supplement or medication.
No reviewed caution rules are available yet. Reported caution findings are shown below.
Findings to review with care
Side effects reported for the ingredient alone are separated from findings involving another supplement or medication.
Cautions reported with another supplement or medication
These studies reported worsening outcomes, reduced absorption, or other cautions with combined use. They do not predict an individual's outcome.
Sodium ValproateValproate interferes with one-carbon metabolism and folate transport, potentially reducing folic acid efficacy and increasing congenital risks.