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Fiber fix? study tests if High-Fiber diet beats standard weight loss advice

NCT ID NCT06227494

Disease control Sponsor: Oklahoma State University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing This study
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tests whether a diet rich in fiber (30-35 grams per day) helps adults with obesity lose weight and improve health markers like body composition and gut bacteria. Researchers will compare a fiber-focused program to standard weight loss education in 63 participants. The goal is to see if fiber is a simple, effective tool for long-term weight management.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
dietary fiber (behavioral intervention to increase intake to 30-35 grams/day)
What this could lead to
If it works, this could show that a simple dietary change (more fiber) is an effective way to manage weight and reduce chronic disease risk.
What could go wrong
This is a small early-stage study (63 people) testing a behavioral change, not a drug. Results may not apply to everyone, and long-term adherence to a high-fiber diet can be challenging.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

63 people

The number who actually took part.

Started

Jul 2023

Expected to finish

Feb 2026

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 65 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * 18-65 years of age * Dietary fiber intake ≤25 grams/day * Self-reported BMI ≥30 kg/m2 * Willingness to attend in-person education sessions * Willingness to avoid taking supplemental digestive aids (e.g., alpha-galactosidase (Beano®), * Willingness to provide informed consent. Exclusion Criteria: * Metabolic, digestive, or allergic conditions or reactions that preclude consumption of whole food or food groups (e.g., irritable bowel syndrome, diverticulosis) * History of gastric bypass surgery * Currently taking glucagon like glucagon-like peptide-1 (GLP-1) Receptor Agonists * Self-reported history of a diagnosed eating disorder * Chronic disease (other than obesity) * Pregnancy or lactation * Use of tobacco or electronic smoking products * Taking a pre-, pro-, or syn-biotic supplement * Enrollment in another weight loss or diet intervention

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Conditions

The condition(s) this trial relates to.

Obesity obesity disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Obesity

Contacts and locations

Locations

  • Oklahoma State University

    Stillwater, Oklahoma, 74078, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.