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Can a label save the planet? Fast-Food climate tags tested

NCT ID NCT06678178

Knowledge-focused Sponsor: Johns Hopkins Bloomberg School of Public Health 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This completed pilot study tested whether adding climate-impact labels to fast-food menus influences the healthfulness of people's meal choices. Over 6,600 adults in the U.S. completed a hypothetical online ordering task, viewing menus with different label designs. The goal was to see if such labels could nudge consumers toward healthier and more climate-friendly options.

What this could mean

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

Active substance
Climate impact menu labels (behavioral intervention)
What this could lead to
If effective, these labels could help people make more nutritious and environmentally friendly fast-food choices.
What could go wrong
This was a small, hypothetical online ordering task, not a real-world setting. Actual behavior may differ, and the study only measured one meal choice.

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

6,622 people

The number who actually took part.

Started

Dec 2024

Finished

Dec 2024

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: * 18 years of age or older * Member of the CloudResearch panel * Residing in the United States Exclusion Criteria: * Under 18 years of age * Not residing in the United States * Completed the survey implausibly quick based on the distribution of the time to complete the survey among all participants * Failed the built-in Qualtrics survey fraud detection measures

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Conditions

The condition(s) this trial relates to.

Food Preferences

As listed by the trial registrant

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

Food selection

Contacts and locations

Locations

  • Johns Hopkins Bloomberg School of Public Health

    Baltimore, Maryland, 21205, United States

More trials for these conditions

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