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Environmental Harm Menu Labels and the Healthfulness of Real-World Fast-Food Orders

RecruitingHealthy volunteers welcome

Longitudinal Trial Evaluating the Effect of Environmental Harm Menu Labels on the Healthfulness of Real-World Fast-Food Meal Orders

Who can join

Ages 18 to 64 · All sexes · Healthy volunteers welcome

Full eligibility criteria
Inclusion Criteria:

* Aged 18 to 64 years
* Consumes fast food two or more times per month
* Willing to eat meat
* Lives or works within the greater Washington, D.C./Baltimore metropolitan area, defined as the counties and county equivalents within the Baltimore-Columbia-Towson, MD and Washington-Arlington-Alexandria, DC-VA-MD-WV Core Based Statistical Areas (excluding Jefferson County, West Virginia)
* Has access to the internet during the daytime
* Has access to an internet-capable device (smartphone, tablet, or computer)
* Able to send and receive phone calls and text messages at a unique primary phone number (number if not affiliated with a separate prospective or enrolled participant record)
* Available to receive a weekly lunch delivery one day per week (Tuesday-Friday, 11:00 am - 3:00 pm) for seven weeks at a consistent address within the sample frame (this includes screening for potentially disruptive travel plans during ordering period)
* Within the delivery zone for both restaurants in the study
* Willing to complete training on lunch ordering procedures
* Willing and able to complete dietary recalls and surveys

Exclusion Criteria:

* Under 18 years of age
* Over 64 years of age
* Consumes fast food fewer than two times per month
* Pescatarian, vegetarian, or vegan (due to menu content)
* Lives and works outside of the greater Washington, D.C./Baltimore metropolitan area
* Lacks access to the internet during the daytime
* Lacks access to an internet-capable device
* Unable to send and receive phone calls and text messages at a unique primary phone number (phone number is affiliated with a separate prospective or enrolled participant record)
* Lives or works outside the delivery zone for either or both study restaurants
* Unavailable to receive seven weeks of consecutive lunch deliveries on a selected day Tuesday through Friday between 11:00 am and 3:00 pm at a consistent address within the sample frame
* Unwilling to complete training on lunch ordering procedures
* Unwilling or unable to complete dietary recalls and surveys
* Fails verification via Cloudfare Turnstile check when accessing REDCap Interest Survey
* Answers the hidden bot-detection question embedded in the Interest Survey

About the study

The primary objective of this study is to evaluate whether repeated exposure to environmental harm menu labels on fast-food restaurant menus improves the healthfulness of real-world fast-food meal orders. Participants will be randomized to view either a control (QR code) label or traffic-light style environmental harm labels on two alternating fast-food restaurant menus, and will order one lunch per week for seven weeks through a study ordering website, with each meal delivered to the participant the following day.

What is being tested

Sponsor: Johns Hopkins Bloomberg School of Public Health · Participants: 450 · Started: Nov 2, 2026

Contact the study team

Official record on ClinicalTrials.gov — NCT07910604

Locations in the U.S.

MarylandJohns Hopkins Bloomberg School of Public Health, Baltimore

From ClinicalTrials.gov, data retrieved Nov 15, 2026. Each study sets its own eligibility; the study team decides who can join.