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NCT Number: NCT07249008

NSS Grocery Store Brazil

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.

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Key information

Conditions

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

Age range

20 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Milken Institute School of Public Health

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

Location status: Recruiting

Location contact

Allison X Sylvetsky, PI

CONTACT

[email protected]

202-994-9412

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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.

Treatment and study plan

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

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

Primary outcomes

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

    Time frame: Day 1

    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.

Secondary outcomes

  1. Percentage of products selected that contain NSS and high added sugars

    Time frame: Day 1

    Selection of products containing both NSS and are high in added sugars, defined as those displaying the FOPL for added sugars (i.e., more than 7.5 g per 100 ml for liquids, and more than 10 g per 100 g for foods).

Study contacts

Contact information is provided by the study sponsor or research team.

Allison C Sylvetsky, PhD

CONTACT

[email protected]

+1 202-994-9412

Mariana Fagundes Grilo, MHP

CONTACT

[email protected]

Sponsors and collaborators

Lead sponsor

George Washington University

Other

Registry information

Official study title

Effects of a Non-sugar Sweetener Label on Parents' Selection of Foods and Beverages in Brazil: a Randomized Clinical Trial.

Important dates

Study start
2026
Primary completion
2026
Study completion
2026
First posted
Nov 25, 2025
Registry last updated
Apr 15, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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