Scaling the Food Mountain: Implications for Addressing the Determinants of Consumer Food Waste Practices.

Abstract

The growing food waste phenomenon is recognised as a global issue with significant social, economic, and environmental burdens. This is a major concern in developed nations, where consumers are the largest contributors to the total volume of food waste production. As a leading cause of food and water insecurity, economic inequality, and environmental degradation, preventing and minimising consumer food waste is a key objective for policymakers and practitioners. Due to the complex consumer behaviours and practices associated with food waste generation, current understandings of why food waste occurs remain scattered. The purpose of this review is therefore to map the history and development of consumer food waste research over time, highlighting key themes and inconsistencies within the existing literature. Adopting a narrative approach, the literature is organised into three distinct themes to explore and identify the various internal and external determinants of consumer food waste. Our analysis highlights consumer food waste as a complex and multi-faceted challenge which cannot be attributed to one single variable, but rather a combination of behaviours determined by various societal, individual, and behavioural factors. While previous research tends to frame food waste as mainly a consumer issue, this review identifies several collective actors who are central to the problem. These findings call for a holistic view across the food supply chain to help identify opportunities for multi-stakeholder actions that prevent and reduce food waste at the consumer level. Drawing upon these new insights, we provide practical recommendations to assist policymakers, retailers, and consumers in mitigating consumer-related food waste.