Food waste prevention is a hot topic on the policy agenda. According to available data, urgent measures need to be undertaken to significantly reduce the current generation of food waste. However, it is important to thoroughly understand consumers' behaviour to define measures that will lead to a long-lasting change in the situation. The aim of the present work is to analyse consumer food waste behaviour by means of a model that brings together food-related and waste management variables. To do so, a survey was given to 418 consumers of the metropolitan area of Barcelona. Results show that food waste is directly influenced by purchasing discipline, waste prevention habits and materialism values and indirectly influenced by environmental values. This highlights the importance of addressing the problem from different perspectives and emphasizes the importance of considering this problem as a transversal element for policy makers. We suggest that household food waste prevention and reduction needs to be included as a key element in different policy areas.Postprint (published version

Addressing the generation of food waste is a major challenge nowadays. An increasing interest in studying food waste generation has emerged over the last decade. However, little attention has been devoted to understanding the root of the problem by carrying out a whole-supply-chain analysis and applying multidimensional approaches. The aim of this paper was to identify the causes of food waste in the metropolitan region of Barcelona along the food supply chain, considering the relevant stakeholders’ perceptions. Moreover, we examined the circumstantial or structural nature of the identified causes. We conducted a qualitative study consisting of 24 in-depth interviews of key stakeholders in the region along the food supply chain from October 2014 to January 2015. The interviews were analyzed by content analysis, and the main results are presented here. We used a conceptual framework that differentiates among micro, meso, and macro causes to disentangle the nature of the causes. The results from this study show the great interest of regional stakeholders in the issue of the generation of food waste and provide a complete map of the causes of food waste in the metropolitan region. From our study, we advocate that food waste is not only a sum of incidentals but it a structural problem.