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Vegan vs. carnivore: which diet keeps your arteries cleanest?

NCT ID NCT07474233

Knowledge-focused Sponsor: Liverpool John Moores 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Aug 27, 2026 · Updated 3 times

Summary

This study will compare how vegan, omnivorous, and carnivore diets affect the way LDL cholesterol particles clump together in the blood, which can lead to artery plaque. Researchers will measure blood lipids and other health markers in 90 adults aged 25-60 who have followed their diet for at least 6 months. The goal is to understand links between diet patterns and heart and metabolic health.

What this could mean

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

What this could lead to
If successful, this study could reveal which diet patterns are linked to healthier cholesterol behavior, potentially guiding future dietary recommendations for heart disease prevention.
What could go wrong
This is an observational study, not a treatment trial. It cannot prove cause and effect, and results may not apply to people outside the specific diet groups studied.

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.

Participants

About 90 people

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

Expected to start

Oct 2026

An estimate. Start dates often move.

Expected to finish

May 2027

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.

Who is studied

Individuals based in or around the Liverpool and North West area that habitually follow one of the three pre-specified dietary patterns.

Ages

25 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: * Adults aged 25-60 years. * BMI range (18.5-29.9 kg/m²). * Following one of the specified dietary patterns (vegan/plant-based, carnivore, or omnivorous) for a minimum of 6 months. * Self-identified as health-focused (i.e., intentionally following the diet for perceived health benefits). Exclusion Criteria: * BMI outside the stated range (\<18.5 or ≥30 kg/m²). * Use of lipid-lowering medications or supplements that may interfere with LDL levels. * Pregnancy or breastfeeding. * Any significant deviation from the specified diet within the last month.

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Conditions

The condition(s) this trial relates to.

abdominal obesity-metabolic syndrome atherosclerosis atherosclerotic cardiovascular disease cardiovascular disorder Dyslipidemias inherited lipid metabolism disorder metabolic syndrome X

As listed by the trial registrant

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

Atherosclerosis cardiovascular disease Dyslipidaemia Endothelial dysfunction Metabolic syndrome

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

  • Tom Reilly Building, Liverpool John Moores University

    Liverpool, ENG, L3 3AF, United Kingdom

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