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Study reveals how processed foods trick your appetite

NCT ID NCT07600281

Knowledge-focused Sponsor: Purdue University Source: ClinicalTrials.gov ↗

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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
Running, but no longer taking on new participants.
Completed This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looked at how the level of food processing and taste affect appetite and digestion. Forty healthy adults ate four different meals, ranging from ultra-processed to minimally processed, with either high or low palatability. Researchers measured hunger, fullness, and how fast food moved through the gut. The goal was to understand, not treat, how these factors influence eating behavior.

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

40 people

The number who actually took part.

Started

Sep 2024

Finished

Apr 2026

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 60 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: * Individuals aged 18 to 60 years. * Any sex, gender, or orientation. * Self-reported good health. * No medication use. * No allergies or food sensitivities to any of the foods used in the study. * No anticipated change in physical activity during the study period. * Willingness to complete all planned study activities, including the screening visit and four test visits. * At screening, participants must rate the selected high-palatability foods between 60 and 90 on a 100-unit visual analog scale, where 100 = extremely palatable. * At screening, participants must rate the selected low-palatability foods between 10 and 40 on a 100-unit visual analog scale. Exclusion Criteria: * Younger than 18 years or older than 60 years. * Current medication use. * Allergies or food sensitivities to any study foods. * Not meeting the required palatability rating ranges during screening. * Anticipated change in physical activity during the study period. * Not self-reporting good health. * Unwillingness or inability to complete the planned study activities.

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Conditions

The condition(s) this trial relates to.

Feeding Behavior

As listed by the trial registrant

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

Appetite Eating behavior Food palatability Food processing Gastrointestinal transit

Contacts and locations

Locations

  • Purdue University

    West Lafayette, Indiana, 47907, United States

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