Encouraging Healthy and Sustainable Dietary Substitutions

Stanford University

Status: Completed

Conditions: Food Selection

Treatments: Behavioral: Neutral messages; Behavioral: Health messages; Behavioral: Environmental messages; Behavioral: Health and environmental messages

Study type: Interventional

Funder types: Other; NIH

Identifiers

NCT06175026

71737

K01HL158608 (U.S. NIH Grant/Contract)

Details and patient eligibility

About

The aim of this study is to examine emerging adults' responses to dietary substitution messages about health, the environment, or both health and the environment.

Full description

This online study will examine emerging adults' responses to dietary substitution messages about 4 different topics. Participants will be randomized to 1 of 4 topic arms: 1) Control (neutral topic, not related to health or the environment); 2) Health topic; 3) Environment topic; 4) Health and Environment topic. Participants will view messages about each of 4 dietary substitutions: replacing red meat with chicken or vegetarian options; replacing dairy milk with non-dairy milk; replacing juice with whole fruit; and replacing sugar-sweetened beverages with water. For each dietary substitution, participants will view 2 messages about their assigned topic, with the 2 messages shown in random order. Participants will rate each message on perceived message effectiveness (primary outcome).

Enrollment: 1,753 patients

Sex: All

Ages: 18 to 25 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Age between 18-25 years
• Reside in the United States
• Ability to complete a survey in English

Exclusion criteria

• Older than 25 years; younger than 18 years
• Reside outside of the United States
• Unable to complete a survey in English

Trial design

Primary purpose: Other

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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1,753 participants in 4 patient groups

Health messages

Experimental group

Description:

Messages shown will be related to the health impacts of making certain dietary substitutions (replacing beef with chicken and vegetarian entrees; replacing juice with whole fruit; replacing dairy milk with non-dairy milk; replacing sugar-sweetened beverages with water).

Treatment:

Behavioral: Health messages

Environment messages

Experimental group

Description:

Messages shown will be related to the environmental impacts of making certain dietary substitutions (replacing beef with chicken and vegetarian entrees; replacing juice with whole fruit; replacing dairy milk with non-dairy milk; replacing sugar-sweetened beverages with water).

Treatment:

Behavioral: Environmental messages

Health and environment messages

Experimental group

Description:

Messages shown will be related to the health and environmental impacts of making certain dietary substitutions (replacing beef with chicken and vegetarian entrees; replacing juice with whole fruit; replacing dairy milk with non-dairy milk; replacing sugar-sweetened beverages with water).

Treatment:

Behavioral: Health and environmental messages

Neutral messages

Active Comparator group

Description:

Messages shown will be neutral and unrelated to the health or environmental impacts of making certain dietary substitutions (replacing beef with chicken and vegetarian entrees; replacing juice with whole fruit; replacing dairy milk with non-dairy milk; replacing sugar-sweetened beverages with water).

Treatment:

Behavioral: Neutral messages