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Study reveals what happens inside your body after eating a burger

NCT ID NCT04308473

Knowledge-focused Sponsor: The Cleveland Clinic 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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 eating ultra-processed foods, like hamburgers and fries, changes certain chemicals in your blood and urine compared to eating whole foods. Researchers at the Cleveland Clinic studied 46 healthy adults to track these changes. The goal is to better understand the immediate effects of processed foods on the body.

What this could mean

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

Active substance
Ultra-processed food meal
What this could lead to
If successful, this could help us understand how ultra-processed foods impact health at a molecular level.
What could go wrong
This is a small, completed observational study, so results may not apply broadly. It only measures short-term changes, not long-term health effects.

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

46 people

The number who actually took part.

Started

Sep 2020

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 years and older

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: * Men and women age 18 years or above. * Able to provide informed consent and comply with study protocol * Able to remain on a stable aspirin regimen (either on or off aspirin or aspirin products) for 1 week prior to starting study until the end of the study period. Exclusion Criteria: * Significant chronic illness or end-organ dysfunction, including known history of uncompensated heart failure, renal failure, pulmonary disease, hematologic diseases. * Active infection or received antibiotics within 6 months of study enrollment. * Use of over-the-counter probiotic within past month. * Chronic gastrointestinal disorders. * Intolerance to probiotic therapy. * Allergy to vancomycin, ciprofloxacin, neomycin, metronidazole, or lactose. * Allergy to any of the food components of the challenge meals. * Having undergone bariatric procedures or surgeries such as gastric banding or bypass. * Pregnancy.

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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.

Dietary habits

Contacts and locations

Locations

  • Cleveland Clinic Main Campus

    Cleveland, Ohio, 44195, United States

More trials for these conditions

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