biotech

Bio-Analyst

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Tier-BPublic-ready6/28/2026

Folate

Menstrual and women's health is the main area connected here, and any felt benefit should be read together with the human evidence base.

The 54.4 score includes research signals from patient or disease contexts. General supplement evidence is not repeated enough, so the B tier remains conservative.

Representative tier calculated from paper evidence that passed the collection audit.

Papers analyzed
94
Caution signal
Low
Context-specific research signal
54.4
Menstrual and women's healthBlood-Level or Deficiency Marker

Main benefit evidence

The representative ingredient tier is calculated from these target-level evidence groups.

Women's health
4 studiesTier-B
Menstrual and women's health
Fairly consistent positive signal in studiesFelt benefit focusPatient-group study

Potential benefit studied in Women's health. These findings come from a defined study population, so everyday effects may differ.

Evidence score
54.6
Study context
Patient-group study

This score reflects the strength of this benefit group. The ingredient tier also considers paper count, repetition, population, and study context.

Nutrient status and deficiency
1 studiesTier-C
Blood-Level or Deficiency Marker
Some positive signal observedResearch marker focusPatient-group study

This is based on lab markers such as blood levels, deficiency correction, or absorption. Read it separately from directly felt outcomes.

Evidence score
20.9
Study context
Patient-group study

This score reflects the strength of this benefit group. The ingredient tier also considers paper count, repetition, population, and study context.

Recent research

Updated This Month10 new papers

Observed range in repeated studies

This range includes studies in specific patient groups. It is not a general dose or recommendation.

Lower observed study value
0.4
mg/day
Higher observed study value
50
mg/day
Only ranges repeated in human, oral, single-ingredient studies are shown.
Not personal dosing instructions, recommendations, or safety limits.

Side effects and combination findings in studies

Findings from studies of this ingredient alone are separated from findings involving another supplement or medication.

Caution index
0.9
Caution band: Low
Caution signals
7
Side effects + combos + curated rules
Key precautions
No curated contraindication rule is available yet, but literature caution signals are shown below.
These are signals reported in studies. They do not predict what will happen to an individual.

Findings to review with care

Side effects reported for the ingredient alone are separated from findings involving another supplement or medication.

Side effects reported when this ingredient was used alone

Symptoms or adverse events reported in studies of this ingredient without another active ingredient.

Adverse effect signal1 papers
The report describes a possible direct stimulation of hormone-resistant prostate cancer associated with the ingestion of a supplement containing folic acid, L-methyltetrahydrofolate, and vitamin B12.Human studies · Study type not identified
maternal metabolism and hypothalamic gene expression1 papers
Higher doses of both MTHF and FA were associated with potential adverse programming effects on maternal phenotype, including altered weight gain, food intake, and insulin resistance in rats.Animal studies · Study type not identified
Excessive Folic Acid Exposure1 papers
Excessive exposure to folic acid has been linked to adverse health effects.Human studies · Systematic review
Adverse effect signal1 papers
The review mentions that in the case of tumor existence, therapeutic use of folic acid requires great care as it may promote the progression of certain precancerous lesions.Human studies · Study type not identified
Adverse effect signal1 papers
The review mentions possible side effects of folate supplementation in sickle cell disease, though specific side effects are not detailed.Human studies · Study type not identified

Caution signals when used with another supplement or medication

These studies reported a negative change, reduced absorption, or another caution when substances were used together. They do not predict an individual outcome.

Vitamin B12The main concern relevant to short-term use of folate supplements in depression patients is the possible masking of vitamin B12 deficiency symptoms.
MethotrexateThe abstract reviews that methotrexate's adverse effects are likely due to folate antagonism, and that folic acid supplementation is recommended to reduce toxicity without compromising methotrexate efficacy.

Evidence summaries

Paper IDs and full lists are private. Only study types and summaries are shown.

Key Evidence #1
Public scholarly dataCitation signal: 659
review

The results of the first comparison, involving 6708 births with information on NTDs and other infant outcomes, show a protective effect of daily folic acid supplementation (alone or in combination with other vitamins and minerals) in preventing N TDs compared

Key Evidence #2
Public scholarly dataCitation signal: 218
review

It is indicated that nationally representative data are needed to guide the development of nutrition interventions and public health programs, such as dietary diversification, micronutrient fortification and supplementation.

Key Evidence #3
Public scholarly dataCitation signal: 199
observational

In this small trial of children with non-syndromic ASD and language impairment, treatment with high-dose folinic acid for 12 weeks resulted in improvement in verbal communication as compared with placebo, particularly in those participants who were positive fo

3 more summariesLimited representative sample by study type.
>
Public scholarly dataCitation signal: 170
review

Folic acid's putative role in influencing the acquisition of epigenetic marks in the germline, acquired during embryogenesis, is discussed, as well as the role of FA in the management of cancerous disease.

Public scholarly dataCitation signal: 137
observational

Folate status data for WRA globally are limited and must be carefully interpreted due to methodological issues, and future surveys would benefit from using the microbiologic assay to assess folate status, along with assay‐matched cutoffs to improve monitoring

Public scholarly dataCitation signal: 122
observational

The human gut appears to have a very efficient capacity to convert reduced dietary folates to 5-MTHF but limited ability to reduce folic acid, which would suggest that humans are reliant on the liver for folic Acid reduction even though it has a low and highly

Folate
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