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Junk food diet study: will eating cleaner keep blood sugar steady?

NCT ID NCT07175701

Knowledge-focused Sponsor: Korea University 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 reducing ultra-processed foods (like chips and sugary drinks) can improve blood sugar levels in healthy Korean adults aged 20-39. Participants will wear a continuous glucose monitor and report their diet for 10 days before and after receiving dietary counseling. The goal is to see if cutting back on these foods helps keep blood sugar more stable after meals.

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 50 people

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

Started

Oct 2025

Expected to finish

Aug 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.

Ages

20 to 39 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: 1. Korean adults aged 20-39 years 2. Not currently pregnant 3. No personal history of diabetes or other glucose-related conditions 4. Consume ≥25% of daily energy intake from UPFs, as assessed by an online, self-administered semi-quantitative screening food frequency questionnaire (FFQ) 5. No restriction on wearing a CGM device 6. No increased risk of bleeding 7. No prior adverse reaction to CGM devices 8. Willingness to participate in follow-up assessments Exclusion Criteria: 1. Unable to maintain continuous follow-up during the study period (e.g., due to special plans such as traveling) 2. Planning to follow a special or restrictive diet (e.g., for weight loss) during the study period

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Conditions

The condition(s) this trial relates to.

glucose intolerance hyperglycemia

As listed by the trial registrant

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

Food additives Glucose Glucose intolerance Glucose level change Glucose levels Glycemic control Glycemic variability Hyperglycemias Postprandial glucose

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

  • Health Promotion Lab, College of Health Science, Korea University

    RECRUITING

    Seoul, Seoul, 02841, South Korea

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