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Traffic light labels on food may guide shoppers to better choices

NCT ID NCT06440421

Knowledge-focused Sponsor: Duke-NUS Graduate Medical School Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 26, 2026 · Last updated Jun 26, 2026

Summary

This study tested whether adding color-coded nutrition labels (green, amber, red) to food products in an online grocery store helps shoppers choose healthier items. 395 adults in Bahrain completed a one-time shopping trip in a simulated online store. The researchers compared the diet quality of purchases made with and without these labels to see if the labels encourage healthier selections.

What this could mean

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

Active substance
Multiple-Traffic Light (MTL) food labels
What this could lead to
If effective, MTL labels could help people make healthier food choices when shopping online, potentially improving diet quality at a population level.
What could go wrong
This was a one-time online shopping experiment, not a real-world long-term study. Results may not reflect actual shopping habits or lasting dietary changes.

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

395 people

The number who actually took part.

Started

Jan 2025

Finished

Jun 2025

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

21 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: * People who are residents of the Kingdom of Bahrain * Age of 21 and above, * Arabic OR English speakers and readers, and * A weekly primary grocery shopper for their households can participate in this study. Exclusion Criteria: * People who are not residents of the Kingdom of Bahrain * Under 21 years of age, * Cannot speak or read Arabic AND English, or * Are not weekly primary grocery shoppers for their households cannot participate in this study.

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As listed by the trial registrant

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

Diet, healthy

Contacts and locations

Locations

  • Seef Mall

    Manama, Manama, Bahrain

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