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Protein power or peril? new study probes link to heart disease

NCT ID NCT05235464

Knowledge-focused Sponsor: University of Missouri-Columbia Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 investigates whether high-protein meals, especially from animal sources, activate immune cells in a way that could worsen atherosclerosis (hardening of the arteries). Researchers will give 24 adults different protein-rich meals and measure changes in blood cells. The goal is to understand if protein type and amount influence heart disease risk, which could reshape dietary advice.

What this could mean

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

Active substance
dietary protein (animal vs. plant sources)
What this could lead to
If successful, this could reveal whether high-protein diets, especially from animal sources, contribute to heart disease, and point toward safer dietary recommendations.
What could go wrong
This is a small, early-stage study in 24 people, so results may not apply broadly. It only looks at short-term cell changes, not actual heart attacks or strokes.

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

About 24 people

The number the study aims to enrol. It can still change while the study runs.

Started

Mar 2023

Expected to finish

Mar 2028

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

45 to 75 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: * \>=45 and \<=75 years of age * body mass index \>=25.0 and \<40.0 kg/m2 Exclusion Criteria: * \<45 and \>75 years of age * body mass index \<25.0 or \>39.9 kg/m2 * plasma triglyceride \<125 mg/dl * history of or current significant organ system dysfunction * allergies or intolerances to meal ingredients * use of medications or dietary supplements that could confound the study outcomes * engaged in regular structured exercise \>150 min per week * alcohol use disorder * premenopausal women * persons who smoke * prisoners * inability to grant voluntary informed consent

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Conditions

The condition(s) this trial relates to.

atherosclerosis

As listed by the trial registrant

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

Atherosclerosis

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • University of Missouri School of Medicine

    RECRUITING

    Columbia, Missouri, 65212, United States

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