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Traffic-light labels on menus: do they nudge us to eat better?

NCT ID NCT06923241

Knowledge-focused Sponsor: University of Liverpool 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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested whether adding Nutri-score labels (A to E ratings) to restaurant menus, alongside calorie information, helps people pick healthier meals. Over 600 adults in Liverpool ordered from a menu with either calorie info alone or calorie info plus Nutri-score labels. Researchers measured how effective people thought the labels were and the nutritional quality of their food choices.

What this could mean

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

Active substance
menu labelling type (Nutri-score labels with calorie info vs. calorie info alone)
What this could lead to
If it works, this could show that simple front-of-pack labels help people make healthier choices when eating out.
What could go wrong
This is a small, completed study in one city, so results may not apply everywhere. It measures perceived effectiveness, not actual long-term health 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

672 people

The number who actually took part.

Started

Mar 2025

Finished

Aug 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

18 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: * Can visit a restaurant in Liverpool city centre * Regularly eat food prepared out of the home (from restaurants, cafes, fast food etc., at least once a month) * Over the age of 18 years * Fluent English speaker Exclusion Criteria: * Pregnant/breastfeeding * You have been diagnosed with a current or historic eating disorder

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Conditions

The condition(s) this trial relates to.

progressive myoclonus epilepsy

As listed by the trial registrant

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

Food choice Food labelling PME

Contacts and locations

Locations

  • University of Liverpool

    Liverpool, Merseyside, L69 7ZA, United Kingdom

More trials for these conditions

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