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Linguistically Tailored Health Messages to Encourage Plant-Based Food Choices in Adolescents

NCT06742346 · Status: ENROLLING_BY_INVITATION · Phase: NA · Type: INTERVENTIONAL · Enrollment: 600

Last updated 2025-08-12

No results posted yet for this study

Summary

The goal of this clinical trial is to investigate the effectiveness of linguistically tailored messages for promoting plant-based food choices in adolescents. The main question it aims to answer is:

• Are linguistically tailored messages more effective in promoting plant-based eating compared to a) non-tailored messages (active control), and b) not receiving messages at all (passive control)?

Researchers will compare participants exposed to linguistically tailored messages, non-tailored messages, and no messages to determine if linguistic messages are more effective in promoting plant-based food choices. Participants will receive daily messages promoting a plant-based diet from Monday to Friday for two weeks, accompanied by daily and weekend surveys about their food choices and message perception.

Conditions

  • Food Consumption
  • Sustainable Food Consumption
  • Sustainable Healthy Eating Behaviour

Interventions

BEHAVIORAL

Non Tailored Messages

Generic messages promoting a plant-based diet were developed, with each message addressing one of the three most commonly mentioned motives for plant-based eating (Miki et al., 2019; Miki et al., 2020): health motives, environmental motives, and animal welfare motives. All messages were designed to be factual (including science-based statistics), concise (4-5 sentences), relevant to teens (e.g., addressing health concerns like acne), and autonomy-supportive (offering suggestions and tips rather than directives) (Hingle et al., 2013). The messages were intentionally crafted in a neutral linguistic style, avoiding highly emotive language, non-standard syntax, or emojis. These messages are delivered from Monday to Friday for two weeks.

BEHAVIORAL

Linguistically tailored health messages

Linguistically tailored messages are generated using a Large Language Model. Generic messages promoting a plant-based diet were customized to align with participants' linguistic style, including their preferred choice of words, expressed valence, syntax, and emoji use. These messages are delivered from Monday to Friday for two weeks.

Sponsors & Collaborators

  • Erasmus University Rotterdam

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
11 Years
Max Age
16 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2024-10-04
Primary Completion
2025-06-01
Completion
2025-10-01

Countries

  • Ireland
  • United Kingdom

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06742346 on ClinicalTrials.gov