An RCT study to evaluate a targeted, theory driven healthy eating leaflet

Area of Science:

• Health Psychology
• Nutrition Education
• Behavioral Science

Background:

• Public health initiatives often use leaflets to promote healthy eating.
• Existing leaflets may lack theoretical grounding, limiting their effectiveness.
• Targeting specific psychological constructs can enhance health behavior change.

Purpose of the Study:

• To evaluate a theory-based healthy eating leaflet for young adults (18-30 years).
• To compare the effectiveness of a theory-based leaflet against standard leaflets.
• To assess the impact on eating intentions, attitudes, self-efficacy, and behavior.

Main Methods:

• A randomized controlled trial with 104 participants.
• Intervention group received a theory-based leaflet; control groups received standard or local leaflets.
• Cognitions and behaviors were measured at baseline, immediately post-intervention, and at two-week follow-up.

Main Results:

• The theory-based leaflet significantly increased healthy eating intentions at follow-up.
• Participants in the intervention group demonstrated healthier eating behaviors at two weeks.
• The intervention leaflet was perceived as more persuasive than control leaflets.

Conclusions:

• A targeted, theory-based approach is effective for promoting healthy eating in young adults.
• Modifying existing materials to incorporate psychological theories enhances persuasive impact.
• This strategy offers a valuable tool for public health nutrition interventions.