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Can switching to a vegan diet for one month change your body and blood?

NCT ID NCT07731633

Knowledge-focused Sponsor: University Hospital, Martin 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 28, 2026 · Last updated Jul 29, 2026 · Updated 1 time

Summary

This study compares healthy long-term vegans, omnivores, and omnivores who switch to a vegan diet for one month. Researchers measure body weight, body fat, cholesterol, inflammation markers, and quality of life to see how diet affects metabolic health. The goal is to understand both the immediate and long-term effects of a plant-based diet.

What this could mean

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

Active substance
vegan diet
What this could lead to
If the results show clear differences, this could help clarify whether short-term or long-term vegan eating patterns affect metabolic health and quality of life.
What could go wrong
This is a small, non-randomized study with only 31 participants, so findings may not apply broadly. Diet adherence and self-reporting can also affect accuracy.

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

31 people

The number who actually took part.

Started

Feb 2023

Finished

Jun 2024

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: * Age ≥ 18 years * Healthy individuals without chronic disease * BMI between 18 and 30 kg/m² * Provision of written informed consent * For the VEG-P group: exclusive adherence to a plant-based diet for at least 2 years * For the WD group: regular consumption of animal products for at least 2 years * For the intervention group (VEG): willingness to adhere to complete exclusion of animal products for the duration of the study Exclusion Criteria: * Active infection * Eating disorder * Severe or unstable metabolic disease (e.g., diabetes mellitus) * Endocrine disorders * BMI \< 18 or \> 30 kg/m² * Age \< 18 years * Current or past malignancy * Systemic corticosteroid therapy * Hormone replacement therapy * Pregnancy * Inability to complete follow-up assessments * Excessive alcohol consumption

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As listed by the trial registrant

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

Body composition Cardiometabolic health Quality of life (QOL) Vegan diet

Contacts and locations

Locations

  • University Hospital Martin

    Martin, Žilina Region, 03601, Slovakia

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