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Diet soda showdown: stevia vs. aspartame – which is better for your gut?

NCT ID NCT03259685

Knowledge-focused 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Sep 04, 2026 · Updated 2 times

Summary

This study looked at 41 healthy adults who regularly drink sugary sodas. Researchers replaced their sugary drinks with either stevia-sweetened or aspartame-sweetened beverages for 10 weeks. The goal was to see how these alternatives affect metabolism and gut bacteria. The results could help guide healthier drink choices.

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

41 people

The number who actually took part.

Started

Oct 2017

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 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: * Men and women in good health * Soft drinks consumers (between 4 cans/week to 4 cans/day) Exclusion Criteria: * Metabolic disorders (hypertension, diabetes, hypercholesterolemia) * Daily consumption of more than 4 cans of soft drinks * Regular use of medication affecting study parameters * Change of medication (type or dose) in the last year * Use of antibiotics in the last 3 months * Change in natural health product use in the last 3 months * More than 2 alcohol drinks par day * Weight change of more than 5% in the last 3 months * Surgery in the last 3 months or planed during the study * Allergy or intolerance for products contained in soft drinks

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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.