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Raspberry diet shows promise for gut health and metabolism

NCT ID NCT03620617

Disease control Sponsor: Laval 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
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Sep 09, 2026 · Updated 3 times

Summary

This study looks at whether eating 2 cups of frozen raspberries daily for 8 weeks can improve blood sugar, cholesterol, and gut health in overweight or obese adults with early signs of metabolic syndrome. Researchers want to see if the berries' natural compounds help by changing the gut bacteria. The trial involves 59 participants and compares raspberry eaters to those on their usual diet.

What this could mean

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

Active substance
frozen raspberries
What this could lead to
If it works, this could point toward a simple dietary approach to help manage metabolic syndrome and improve gut health.
What could go wrong
This is a small, early-stage study with only 59 participants, so results may not apply to everyone. The effect of raspberries alone may be modest.

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

59 people

The number who actually took part.

Started

Jan 2018

Expected to finish

Dec 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

18 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: * Men and premenopause women in good health * Caucasians * At least one of the following : BMI between 25 and 40 kg/m2 or Waist circumference ≥ 80 cm for women and ≥ 94 cm for men * At least one of the following : TG ≥ 1.35 mmol/L or fasting insulinemia ≥ 42 pmol/L Exclusion Criteria: * Metabolic disorders (hypertension, diabetes, hypercholesterolemia) * Regular use of medication affecting study parameters * Use of natural health product in the last 3 months * Use of antibiotics in the last 3 months * Nicotine users * Allergy or intolerance for raspberries * Raspberry taste aversion * More than 2 alcohol drinks par day * Particular dietary habits (vegetarism, gluten-free diet, cetogenic diet...) * Weight change of more than 5% in the last 3 months * Surgery in the last 3 months or planed during the study

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Conditions

The condition(s) this trial relates to.

abdominal obesity-metabolic syndrome metabolic syndrome X

As listed by the trial registrant

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

Gut microbiota Metabolic syndrome

Contacts and locations

Locations

  • Laval University

    Québec, G1V0A6, Canada

More trials for these conditions

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