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Sparkling water vs. soda: a tasty way to cut sugar in teens?

NCT ID NCT07223151

Symptom relief Sponsor: Nana Gletsu Miller 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Aug 07, 2026 · Updated 3 times

Summary

This study tests whether replacing sugary sodas with unsweetened sparkling water can reduce added sugar intake and improve health in Black/African American and Latine adolescents with obesity who love sweet drinks. For 4 weeks, participants swap their sodas for one of three options: flavored sparkling water, plain water, or gradually less sweet drinks. Researchers will measure changes in taste preferences, diet quality, and metabolic health over 8 weeks.

What this could mean

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

Active substance
unsweetened sparkling water
What this could lead to
If it works, this could point toward a simple, low-cost way to help teens cut added sugar and improve their diet and metabolic health.
What could go wrong
This is a small, early-stage behavioral study (63 participants) that relies on self-reported diet and taste changes, so results may not apply broadly or lead to lasting habits.

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

About 63 people

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

Started

Jul 2025

Expected to finish

Jun 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.

Ages

12 to 18 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: * Adolescents ages 12 to 18 who display a "sweet-liker" pattern, characterized by a preference for higher concentrations of sugar in beverages, specifically identifying 0.3M (10.3% sucrose) or above as their most liked sample. * Adolescents consumes sugar-sweetened soda greater than or equal to 2 times per week. Adolescents must also indicate a willingness to drink study beverages; not currently dieting/changing diet. Exclusion Criteria: * Adolescent participant is pregnant, since pregnancy affects taste perception * Participant is allergic or intolerant to the items we are testing. * Adolescent with type 1 or type 2 diabetes (self-declared or detected at screening visit through fasting glucose) * Use of GLP-1 receptor agonists intended for weight loss.

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Conditions

The condition(s) this trial relates to.

Feeding Behavior Insulin Resistance Obesity obesity disorder Pediatric Obesity

As listed by the trial registrant

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

Dietary sugars Feeding behavior Insulin resistance Obesity, adolescent Taste perception

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    3 sites. 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

  • Indiana University Hospital

    RECRUITING

    Indianapolis, Indiana, 46202, United States

  • Indiana University School of Public Health - Bloomington

    NOT_YET_RECRUITING

    Bloomington, Indiana, 47405, United States

  • Purdue University

    RECRUITING

    West Lafayette, Indiana, 47907, United States

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