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Grocery labels could slash your carbon footprint and boost health

NCT ID NCT06648226

Knowledge-focused Sponsor: Stanford University 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Stanford study tested whether showing health or climate labels on grocery products, along with swap suggestions, helps people pick healthier and lower-carbon foods. Over 1,200 adults completed online shopping tasks and surveys. The goal was to see if simple labels can guide better choices without forcing anyone to change their habits.

What this could mean

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

Active substance
health and climate labels with swap recommendations
What this could lead to
If successful, this could show that simple labels and swap suggestions in online grocery stores help people make healthier and more eco-friendly food choices.
What could go wrong
This is a completed behavioral study, not a treatment trial. Results may not apply to real-world shopping or lead to lasting behavior change.

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

1,201 people

The number who actually took part.

Started

May 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

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: * Aged 18 years or older * Reside in the United States * Able to complete a survey in English * Have internet access to complete the 3 online study visits Exclusion Criteria: * Under the age of 18 * Reside outside of the United States * Unable to complete a survey in English * Do not have internet access to complete the 3 online study visits

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Conditions

The condition(s) this trial relates to.

Feeding Behavior Food Preferences nutritional disorder

As listed by the trial registrant

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

Dietary habits Food preferences Food selection Healthy diet Nutrition Sustainability

Contacts and locations

Locations

  • Stanford School of Medicine

    Palo Alto, California, 94304, United States

More trials for these conditions

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