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Press release

Household Food Waste Reduced Through Whole-Family Food Literacy Intervention

Philadelphia | February 6, 2024

A pilot study encouraged families to prepare meals together while being mindful of food waste, according to a new study in the Journal of Nutrition Education and Behavior

Food waste is a global issue, with the estimated value of wasted food totaling $230 billion CAD in 2023. In Canada, estimates suggest half of the food wasted occurs at the household level, which roughly equals $1,000 CAD per family per year. A recent research brief(opens in new tab/window)in the Journal of Nutrition Education and Behavior(opens in new tab/window), published by Elsevier, demonstrated the feasibility, acceptability, and effectiveness of a family-based food literacy program that promotes meal preparation and food waste reduction.

Lead study author Amar Laila, PhD, Department of Family Relations and Applied Nutrition, University of Guelph, explained, "Interventions focusing on families with children could decrease food waste in the short- and long-term by teaching how to prepare, store, and eat leftovers."

The Weeknight Supper Savers food literacy intervention was a four-week program that included a toolkit, an online cooking class, and text messages. Toolkits were delivered to families’ homes and included the Rock What You’ve Got” cookbook(opens in new tab/window), a collection of 31 easy-to-prepare recipes focused on reducing food waste, specifically from fruits and vegetables, and information on how to reduce food waste and engage children in cooking. The toolkit also included a reusable meal planner, fillable grocery lists, a food storage guide, a vegetable scrubber, an “eat me first” container to promote using older food first, baking soda to keep food fresh in the refrigerator, and a child-friendly knife.

Caption: The “Rock What You’ve Got” cookbook is a key component of the Weeknight Supper Savers program to reduce food waste and encourage family meal preparation (Credit: University of Guelph)

Eighteen families living in Guelph, Ontario, Canada participated in the Weeknight Supper Savers program. These families had children between the ages of 9 and 12 years. All family members were invited to attend an online cooking class lasting approximately one hour, led by a chef and research team member. Post-intervention interviews and pre- and post-intervention surveys and comprehensive food-waste audits were also part of the study.

All mothers and fathers and most children reported being satisfied with the Weeknight Supper Savers program. Additionally, fruit and vegetable-avoidable waste decreased, and mothers reported greater confidence in reducing food waste. Additionally, children’s knowledge of best-before dates increased.

Amar Laila commented, "Through this pilot study, we found that families with school-aged children are interested in participating in hands-on activities focused on reducing household food waste. The use of online cooking classes, text messages, and toolkits could be acceptable and effective ways to increase food literacy and decrease food waste.”

Notes for editors

The article is "Household Food Waste Intervention Is Feasible, Acceptable, and Effective,” by Amar Laila, PhD; Monica Gallant, MSc; Maggie Bain, MA; Chloe Alexander, MA; Leticia Reis, MSc; Anna Welboren, PhD; Mike von Massow, PhD; Kate Parizeau, PhD; Kathryn Walton, PhD, RD; David W.L. Ma, PhD; and Jess Haines, PhD, RD ( in new tab/window)).It appears in the Journal of Nutrition Education and Behavior, volume 56, issue 2 (February 2024), published by Elsevier.

The article is openly available at in new tab/window).

Financial support was provided by the Danone Institute of North America One Health. One Planet Initiative Research Council of Canada.

Full text of the article is also available to credentialed journalists upon request; contact Eileen Leahy at +1 732 406 1313 or [email protected](opens in new tab/window) to obtain a copy. To schedule an interview with the author(s), please contact Amar Laila, PhD, Department of Family Relations and Applied Nutrition, University of Guelph at [email protected](opens in new tab/window).

An audio podcast featuring an interview with Amar Laila, PhD; and other information for journalists are available at Excerpts from the podcast may be reproduced by the media with permission from Eileen Leahy.

About the Journal of Nutrition Education and Behavior (JNEB)

The Journal of Nutrition Education and Behavior (JNEB), the official journal of the Society for Nutrition Education and Behavior (SNEB), is a refereed, scientific periodical that serves as a resource for all professionals with an interest in nutrition education and dietary/physical activity behaviors. The purpose of JNEB is to document and disseminate original research, emerging issues, and practices relevant to nutrition education and behavior worldwide and to promote healthy, sustainable food choices. It supports the Society's efforts to disseminate innovative nutrition education strategies, and communicate information on food, nutrition, and health issues to students, professionals, policymakers, targeted audiences, and the public.

The Journal of Nutrition Education and Behavior features articles that provide new insights and useful findings related to nutrition education research, practice, and policy. The content areas of JNEB reflect the diverse interests of health, nutrition, education, Cooperative Extension, and other professionals working in areas related to nutrition education and behavior. As the Society's official journal, JNEB also includes occasional policy statements, issue perspectives, and member communications. in new tab/window)

About Elsevier

As a global leader in scientific information and analytics, Elsevier helps researchers and healthcare professionals advance science and improve health outcomes for the benefit of society. We do this by facilitating insights and critical decision-making with innovative solutions based on trusted, evidence-based content and advanced AI-enabled digital technologies.

We have supported the work of our research and healthcare communities for more than 140 years. Our 9,500 employees around the world, including 2,500 technologists, are dedicated to supporting researchers, librarians, academic leaders, funders, governments, R&D-intensive companies, doctors, nurses, future healthcare professionals and educators in their critical work. Our 2,900 scientific journals and iconic reference books include the foremost titles in their fields, including Cell Press, The Lancet and Gray’s Anatomy.

Together with the Elsevier Foundation(opens in new tab/window), we work in partnership with the communities we serve to advance inclusion and diversity in science, research and healthcare in developing countries and around the world.

Elsevier is part of RELX(opens in new tab/window), a global provider of information-based analytics and decision tools for professional and business customers. For more information on our work, digital solutions and content, visit



Eileen Leahy


+1 732 238 3628

E-mail Eileen Leahy