Effects of an Educational Planetary Plate Graphic on Meat Consumption

NCT05565859 | Completed

• 1 other identifier: 52769
• Study Type: interventional
• Target: 957
• Locations: 1 country
• Sites: 1

Brief Summary

The objective of this research was to determine if adding a plate graphic depicting the components of the Eat Lancet Planetary Health diet (Figure 1) to food labels in Stanford University dining halls would lead to dining hall patrons making dietary decisions that better resemble the Planetary Health diet in comparison to a no signage control group. The study hypothesis was that presenting students with a plate graphic featuring the healthy reference diet would decrease objective measures of the amount of meat taken and therefore the environmental impact of student meals.

Conditions

Diet, Food and Nutrition

Keywords

Planetary health; Educational signage; Behavior change; Environment; Sustainability; Food choices; Food insecurity; Dietary behavior

Outcome Measures

Primary Outcomes (1)

• Meat-dish weight

  Meat-dish weight adjusted for the number of people entering the dining hall.

  Control: 4 days (during dinner meals Mon -Thurs) during week 2 of the academic quarter. Intervention: 4 days (during dinner meals Mon -Thurs) during week 6.

Secondary Outcomes (2)

• Meat-dish servings

  Control: 4 days (during dinner meals Mon -Thurs) during week 2 of the academic quarter. Intervention: 4 days (during dinner meals Mon -Thurs) during week 6.

• Meat-dish serving weight

  Control: 4 days (during dinner meals Mon -Thurs) during week 2 of the academic quarter. Intervention: 4 days (during dinner meals Mon -Thurs) during week 6.

Study Arms (2)

Planetary Health Plate Signage

EXPERIMENTAL

A Planetary Health Plate intervention phase where signage was posted in the dining hall promoting the planetary health diet

Behavioral: Planetary Health Plate signage

Control

NO INTERVENTION

Control phase with dining hall signage as usual.

Interventions

Planetary Health Plate signage BEHAVIORAL

A Planetary Health Plate graphic was developed based on the healthy reference diet proposed by the Eat Lancet Commission. The graphic was designed to capture the food groups and proportions of food groups promoted by the Planetary Health diet.

Planetary Health Plate Signage

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Patrons of Florence Moore Dining Hall at Stanford.

You may not qualify if:

• None

Sponsors & Collaborators

• Stanford University: lead

Study Sites (1)

Florence Moore Dining Hall, Stanford University

Stanford, California, 94305, United States

Location

Related Publications (2)

• Willett W, Rockstrom J, Loken B, Springmann M, Lang T, Vermeulen S, Garnett T, Tilman D, DeClerck F, Wood A, Jonell M, Clark M, Gordon LJ, Fanzo J, Hawkes C, Zurayk R, Rivera JA, De Vries W, Majele Sibanda L, Afshin A, Chaudhary A, Herrero M, Agustina R, Branca F, Lartey A, Fan S, Crona B, Fox E, Bignet V, Troell M, Lindahl T, Singh S, Cornell SE, Srinath Reddy K, Narain S, Nishtar S, Murray CJL. Food in the Anthropocene: the EAT-Lancet Commission on healthy diets from sustainable food systems. Lancet. 2019 Feb 2;393(10170):447-492. doi: 10.1016/S0140-6736(18)31788-4. Epub 2019 Jan 16. No abstract available.

  PMID: 30660336 BACKGROUND

• Marcone AL, Darmstadt GL, Challamel GA, Mathur MB, Gardner CD. Effects of an educational planetary plate graphic on meat consumption in a Stanford University dining hall: a randomized controlled trial. BMC Nutr. 2023 Sep 25;9(1):106. doi: 10.1186/s40795-023-00764-3.

  PMID: 37749609 DERIVED

Study Officials

• Christopher D Gardner, MD

  Stanford University

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: PREVENTION
• Intervention Model: CROSSOVER
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Professor-Research of Medicine

Model Details: Crossover randomized control trial with two phases: a Planetary Health Plate intervention phase where signage promoting the planetary health diet was posted and a control phase with signage as usual.

Study Record Dates

• First Submitted: July 21, 2022
• First Posted: October 4, 2022
• Study Start: January 2, 2020
• Primary Completion: June 1, 2020
• Study Completion: March 9, 2022
• Last Updated: October 4, 2022

Record last verified: 2022-09

Locations

US (1)