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What you eat may show up in your brain: new study recruits vegans, vegetarians, and meat eaters

NCT ID NCT07312994

Knowledge-focused Sponsor: Salzburger Landeskliniken 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looks at whether eating a vegan, vegetarian, or omnivore diet changes certain brain-related substances in the blood of healthy young adults. Researchers will measure two markers (NfL and GFAP) that can indicate brain cell health. The goal is simply to learn more, not to test a treatment. About 300 healthy people aged 18-40 who have followed their diet for at least one year can join.

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 300 people

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

Started

Dec 2025

Expected to finish

Sep 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.

Who is studied

Young and healthy individuals aged between 18 and 40 years

Ages

18 to 40 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: * Healthy individuals who have followed a vegan, vegetarian, or omnivorous diet for at least one consecutive year * Aged between 18 and 40 years * Provision of written informed consent Exclusion Criteria: * Diagnose neurological disorders (e.g. neurodegenerative, inflammatory, autoimmune, infectious, vascular) * Eating disorders * Excessive alcohol consumption * Pregnancy * Recent moderate to severe infection (within the past 12 weeks) , including SARS-CoV-2 * Recent trauma, injury, or surgery (within the past 12 weeks) * Significant BMI fluctuations (\>5 points) within the last year * Patients who have been using Proton pump inhibitors (PPIs) for an extended period (e.g., 1 month).

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Conditions

The condition(s) this trial relates to.

Charcot-Marie-Tooth disease type 1F

As listed by the trial registrant

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

GFAP Glial fibrillary acidic protein Neurofilament light chain Vegan diet Vegetarian diet

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

  • Christian-Doppler-Klinik

    RECRUITING

    Salzburg, State of Salzburg, 5020, Austria

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