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Effects of Added Sugar Warning Labels on Explicit Weight Bias

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Study Aim

This study aims to evaluate how warning labels on added sugars can influence explicit weight bias in individuals.

What is being tested

Control label

+ Added sugar warning

Behavioral
Who is being recruted

Over 18 Years
+3 Eligibility Criteria
See all eligibility criteria
How is the trial designed

Prevention Study

Interventional
Study Start: February 2026
See protocol details

Summary

Principal SponsorUniversity of North Carolina, Chapel Hill
Study ContactAline D'Angelo Campos, PhD, MPP
Last updated: January 31, 2026
Sourced from a government-validated database.Claim as a partner

Study start date: February 2, 2026

Actual date on which the first participant was enrolled.

This research focuses on understanding if warning labels about added sugar on sweet drinks can influence people's biases related to weight and their judgments about body weight. The study involves adults who are 18 years or older and have purchased at least one sugary drink in the past week. The goal is to see if these labels can help reduce weight bias and improve understanding about body weight. This study is important as it aims to address the challenge of weight bias and misconceptions about body weight in society. Participants will visit an experimental store four times, with each visit about a week apart. They will be randomly assigned to see either regular labels or warning labels about added sugar on the sweet drinks. During each visit, participants will shop for beverages and complete a computer survey. The study will measure explicit weight bias and responsibility for body weight through these surveys at the beginning and end of the study. This will help researchers understand if and how these labels might change people's perceptions.

Official TitleImpacts of Prolonged Exposure to Added Sugar Warning Labels on Explicit Weight Bias: a Randomized Controlled Trial
Principal SponsorUniversity of North Carolina, Chapel Hill
Study ContactAline D'Angelo Campos, PhD, MPP
Last updated: January 31, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details

543 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Prevention Study

Prevention studies aim to stop a disease from developing. They often involve people at risk and test things like vaccines, lifestyle changes, or preventive medications.



Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Criteria

Any sex

Biological sex of participants that are eligible to enroll.

Over 18 Years

Range of ages for which participants are eligible to join.

Healthy volunteers allowed

If individuals who are healthy and do not have the condition being studied can participate.

Criteria

2 inclusion criteria required to participate
18 years and older

Bought sugary drinks from a store at least once during the past week

1 exclusion criteria prevent from participating
Living in the same household as someone else in the study

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Treatment Groups

2 intervention groups are designated in this study

This study does not include a placebo group 

Treatment Groups

Group I

Group II

Experimental

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.
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