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Protein bar showdown: pea vs. whey – which is better for your gut and metabolism?

NCT ID NCT07489118

Knowledge-focused Sponsor: North Carolina 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study compares protein bars made from whey (animal) or pea (plant) protein, with or without added polyphenols. Over 2 months, 72 healthy adults will eat one bar daily and report taste, digestion, and overall health. Researchers will also check blood markers and gut bacteria changes to see how these ingredients affect metabolic health.

What this could mean

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

Active substance
protein bars (whey, pea, pea with polyphenols)
What this could lead to
If it works, this could help design better-tasting, healthier protein bars that support metabolism and gut health.
What could go wrong
This is a small, early-stage study in healthy adults, so results may not apply to people with health conditions. Taste and tolerance are subjective.

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

72 people

The number who actually took part.

Started

May 2025

Expected to finish

Apr 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 64 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: * both men and women between the ages of 18-64 years; * body mass index of 25 and higher; * generally healthy and without a clinically significant condition (diabetes, infectious disease, or cancer); * participants must not be pregnant or nursing; * participants must not be a tobacco user; and * history of allergies or intolerance to protein bar ingredients. Exclusion Criteria: * body mass index lower than 25; * pregnancy or nursing; * use of blood sugar lowering medications such as metformin, semaglutide, or insulin; * use of dietary supplements with polyphenols; * history of allergies or intolerance to protein bar ingredients; * noncompliance with the study protocol.

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As listed by the trial registrant

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

Food acceptance Immune cells activity Metabolic health Microbiome composition

Contacts and locations

Locations

  • Plants for Human Health Institute

    Kannapolis, North Carolina, 28081, United States

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