NSS Grocery Store Brazil

NCT07249008 | Recruiting

• 1 other identifier: FWA00005945
• Study Type: interventional
• Target: 1,068
• Locations: 1 country
• Sites: 1

Brief Summary

The purpose of this study is to assess the impact of non-sugar sweeteners (NSS) front-of-package labels (FOPL) on Brazilian parents' food and beverage selections for their children. The study includes three arms: 1. no NSS FOPL control group, 2. a group exposed to a NSS FOPL modeled after the Mexican warning label for NSS, and 3. a group exposed to a NSS FOPL using the magnifying glass symbol currently implemented in Brazil for nutrients of public health concern. Participants will be instructed to select products for their child, including one yogurt, three beverages (for breakfast, lunch, and dinner), one granola, and one cereal bar.

Conditions

Brazil-based NSS FOPL; Control Group; Mexico-based NSS FOPL

Outcome Measures

Primary Outcomes (1)

• Percentage of products selected that are unsweetened or low in added sugars

  Selection of products that do not contain NSS or added sugars, or that contain added sugars below the FOPL threshold (i.e., less than 10 g per 100 g) for granola and cereal bars.

  Day 1

Secondary Outcomes (1)

• Percentage of products selected that contain NSS and high added sugars

  Day 1

Study Arms (3)

Control

NO INTERVENTION

Participants view the online store without any non-sugar sweetener front-of-package label

Mexico-based NSS FOPL

EXPERIMENTAL

Participants view the online store with the Mexican-style non-sugar sweetener front-of-package label on eligible products

Other: Experimental : Mexico-based NSS FOPL

Brazil-based NSS FOPL

EXPERIMENTAL

Participants view the online store with the magnifying glass non-sugar sweetener front-of-package label like the one used in Brazil

Other: Experimental : Brazil-based NSS FOPL

Interventions

Experimental : Mexico-based NSS FOPL OTHER

Participants view the online store with the Mexican-style non-sugar sweetener front-of-package label on eligible products

Mexico-based NSS FOPL

Experimental : Brazil-based NSS FOPL OTHER

Participants view the online store with the magnifying glass non-sugar sweetener front-of-package label like the one used in Brazil

Brazil-based NSS FOPL

Eligibility Criteria

• Age: 20 Years+
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

Eligible participants include: * Adults aged 20 years or older, * Living in Brazil * Parents or guardians of children between 2 and 12 years old * Primarily responsible for the household grocery shopping (more than 50%) * Can read and understand Portuguese Recruitment will occur nationwide through an online panel, with quotas for education, race, and geographic distribution to approximate the national profile. Individuals will be excluded if * Not a parent or guardian of a child aged 2-12 years * Younger than 20 years * Not primarily responsible for more than half of the household grocery shopping * Unable to read or understand Portuguese * Do not provide informed consent.

Contact the study team to discuss eligibility requirements. They can help determine if this study is right for you.

Sponsors & Collaborators

• George Washington University: lead

Study Sites (1)

Milken Institute School of Public Health

Washington D.C., District of Columbia, 20037, United States

RECRUITING

Central Study Contacts

Allison C Sylvetsky, PhD

CONTACT

+1 202-994-9412; asylvets@email.gwu.edu

Mariana Fagundes Grilo, MHP

CONTACT

marianafg@gwu.edu

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: OTHER
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Associate Professor, Vice Chair of the Department of Exercise and Nutrition Sciences

Study Record Dates

• First Submitted: September 15, 2025
• First Posted: November 25, 2025
• Study Start: February 15, 2026
• Primary Completion (Estimated): June 30, 2026
• Study Completion (Estimated): June 30, 2026
• Last Updated: April 15, 2026

Record last verified: 2026-04

Data Sharing

• IPD Sharing: Will not share

Locations

US (1)