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Tier-BPublic-ready6/12/2026

Fiber

Digestion and gut comfort is the main area connected here, and any felt benefit should be read together with the human evidence base.

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

Papers analyzed
20
Caution signal
Low
Representative score
67.4
Digestion and gut comfortGlucose and metabolic health markersCondition-specific health context in a specific context

Main benefit evidence

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

Digestion and gut health
4 studiesTier-B
Digestion and gut comfort
Fairly consistent positive signal in studiesFelt benefit focusPatient-group study
Potential benefit studied in Digestion and gut health.
Open metrics
>
Digestion and gut comfort
No direct rate reported. Read direction and evidence strength together.
Evidence score
54.6
Score reflects signal strength. Tier also considers paper count, repetition, and study context.
Glucose and metabolic health
3 studiesTier-B
Glucose and metabolic health markers
Fairly consistent positive signal in studiesResearch marker focusPatient-group study
This card is closer to a measured biomarker or lab outcome than a directly felt user benefit.
Closer to a research marker than a directly felt benefit.
Open metrics
>
Glucose and metabolic markers
No direct rate reported. Read direction and evidence strength together.
Evidence score
52.0
Score reflects signal strength. Tier also considers paper count, repetition, and study context.
Condition-specific evidence
2 studiesTier-C
Condition-specific health context in a specific context
Fairly consistent positive signal in studiesResearch marker focusSupplement context
This result was studied for Condition-specific health context in a narrower population or condition-specific context. It should not be generalized as an everyday supplement effect.
Closer to a research marker than a directly felt benefit.
Open metrics
>
Condition-specific health context
No direct rate reported. Read direction and evidence strength together.
Evidence score
48.7
Score reflects signal strength. Tier also considers paper count, repetition, and study context.
Blood lipids
2 studiesTier-C
Cholesterol and triglycerides
Fairly consistent positive signal in studiesFelt benefit focusPatient-group study
Potential benefit studied in Blood lipids.
Open metrics
>
Cholesterol and triglycerides
No direct rate reported. Read direction and evidence strength together.
Evidence score
48.7
Score reflects signal strength. Tier also considers paper count, repetition, and study context.
Blood pressure and vascular health
2 studiesTier-C
Blood pressure and vascular health markers
Fairly consistent positive signal in studiesResearch marker focusPatient-group study
This card is closer to a measured biomarker or lab outcome than a directly felt user benefit.
Closer to a research marker than a directly felt benefit.
Open metrics
>
Blood pressure and vascular markers
No direct rate reported. Read direction and evidence strength together.
Evidence score
48.7
Score reflects signal strength. Tier also considers paper count, repetition, and study context.
Nutrient status
1 studiesTier-C
Nutrient status markers
Some positive signal observedResearch marker focusPatient-group study
This card is closer to a measured biomarker or lab outcome than a directly felt user benefit.
Closer to a research marker than a directly felt benefit.
Open metrics
>
Nutrient status and deficiency markers
No direct rate reported. Read direction and evidence strength together.
Evidence score
40.0
Score reflects signal strength. Tier also considers paper count, repetition, and study context.

Recent research

Updated This Month10 new papers

10 new papers were added in this period. No new risk signal was identified.

What's new

10 new papers were added.No new risk signal was identified.

Most notable recent finding

This is the most meaningful new study in the latest update.
review
Why it mattersIt ranked highest among the newly collected papers for this ingredient in the latest update.
View paper

Study dosage range (reference only)

Lower dose
11.6
g/day
Higher dose
11.6
g/day
Dosages used in research papers, shown as reference context.
Not personal dosing instructions, recommendations, or safety limits.

Key cautions to review

Standalone side-effect signals and combination cautions are listed separately.

Caution index
0.3
Caution band: Low
Caution signals
0
Side effects + combos + curated rules
Key precautions
No combination caution signal is clear enough to show right now. This does not guarantee safety.
Standalone side effects, combination cautions, and positive combos are separated below.

Side-effect and combination signals

No standalone side-effect or combination signal is currently clear enough to show from the collected papers. This does not mean there is no concern.

Evidence summaries

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

Key Evidence #1
Public scholarly dataCitation signal: 150
observational

This clinical trial demonstrates that a probiotic product with or without dietary fiber controls body fat mass and seems to improve weight management in the PP population.

Key Evidence #2
Public scholarly dataCitation signal: 138
observational

Healthy, overweight adults with high Prevotella abundances lost more weight when consuming a diet rich in WG and fiber ad libitum for 6 wk, which supports enterotypes as a potential biomarker in personalized nutrition for obesity management.

Key Evidence #3
Public scholarly dataCitation signal: 122
observational

Patients with FI may experience a reduction in FI frequency after psyllium supplementation, and decreased FI frequency has been shown to be an important personal goal of treatment for patients with FI.

3 more summariesLimited representative sample by study type.
>
Public scholarly dataCitation signal: 113
observational

Insight into the actions of pea fiber and its impact on modulating microbiota-host-metabolic axes in obesity is provided, including an increase in the SCFA producer Lachnospira in the PF group and decrease in the CO group.

Public scholarly dataCitation signal: 103
observational

[Abstract]: Objective To determine the effects of supplemental fiber on plasma p-cresol, stool frequency, and quality of life (QoL) in chronic kidney disease (CKD) patients. Design and Setting In a 12-week single-blind study, participants were provided with co

Public scholarly dataCitation signal: 92
observational

Fiber supplementation is effective at improving constipation and particularly, psyllium, doses >10 g/d and treatment durations of at least 4 weeks appear optimal, though caution is needed when interpreting the results due to considerable heterogeneity.

Fiber
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