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

NCT ID NCT06678178

Completed Knowledge-focused Sponsor: Johns Hopkins Bloomberg School of Public Health Source: ClinicalTrials.gov ↗

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.

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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

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