The Sustainable Development Goals (SDGs), ratified by the United Nations General Assembly in September 2015, embody a set of 17 objectives designed to address the world’s most urgent challenges. SDG 2: Zero Hunger is intricately linked with all other SDGs, aiming not only to eliminate global hunger but also to collectively achieve the broader spectrum of all other SDGs. In this context, it becomes imperative to address and resolve issues encompassing poverty, health, education, inequality, and climate change in a comprehensive manner, while fostering equitable development. SDG 2: Zero Hunger centers on the elimination of hunger and malnutrition, promoting sustainable agricultural practices, and enhancing productivity and incomes for smallholder farmers and food producers, particularly in developing nations. Accomplishing these targets hinges on the development of resilient food systems and the promotion of innovative agricultural technologies, including those geared towards climate resilience. SDG 2: Zero Hunger encounters multifaceted challenges arising from climate change impacts, rapid urbanization, and the imperative to foster sustainable agricultural practices while reducing disparities. These challenges are inherently intertwined with the goals of the broader SDGs framework, necessitating cooperative efforts, innovative approaches, and concerted actions to guarantee global food security and establish a sustainable and equitable future for all of humanity. This book chapter underscores the undeniable direct and indirect links of SDG 2: Zero Hunger with the entire spectrum of SDGs, substantiated through tangible examples, but also the deficiencies and slow pace of progress. It also underscores the significance of a holistic and integrated approach, emphasizing the need to address SDG 2 and its complementary objectives in a synergistic manner, thereby facilitating tangible and lasting progress towards a more promising future.

The Metabolic Food Waste MFW (kg of food) first developed in 2016 as a new indicator by Serafini and Toti, indicates the amount of food consumed above the nutritional requirements, and the impact of this overconsumption on the environment. It is necessary to identify the causes and to develop potential methods to prevent and reduce MFW, at the same time as increasing consumer awareness about unsustainable diets and changing diet habits towards more environmentally conscious consumption patterns. This study was conducted by collecting and analysing existing reports and studies regarding nutritional requirements, consumer behaviour related to food consumption and food waste, environmental impacts of food waste, and the concept of Metabolic Food Waste. The process of data collection involved searching the studies available online, using keywords related to the subject of MFW and overconsumption. The references in the initial studies consulted were also analysed in order to further identify new data relevant to overconsumption and MFW. The materials studied and analysed related to the environmental impact of MFW were published by E. Toti and M. Serafini in 2016 and 2019; additionally, in order to understand the causes of overconsumption numerous studies were reviewed regarding consumer behaviour, the relationship between economic development and overconsumption, mental health and dietary habits, physical context and dietary habits, genetic predisposition, also childhood and early adulthood environment. By analysing and corroborating external data available for food waste, nutritional requirements, and the environmental impact of food waste and consumer behaviour, we identified as primary causes for MFW the lack of nutritional education and little understanding of the nutritional requirements amongst all categories of consumers, poor access to appropriate food resources or reduced availability of fresh produced food. We conclude that for the quantification of the negative impact of MFW on both the environment and human health we need decisive action to raise consumer awareness for healthy and sustainable diets, together with a uniform worldwide distribution system for nutritious food.

Food security is a matter of global concern, as the supply of food is one of the basic needs, ensuring the survival of the species. The trend of globalization and development of the global economy has shifted the responsible, local consumption patterns towards an increased homogeneity of diets, with food products being disconnected from their source, leading to two major results: (1) increased global consumption and (2) increased uncertainty in the supply chain. To determine what is the nutritional model of Romanians, we developed a questionnaire of 32 questions and distributed it using simple random sampling method. The questionnaire was issued both in physical and digital form and received 1053 responses. The survey was conducted during 2021 and 2022, both in urban and rural areas with the aim of investigating the consumption pattern of the population. The analysis of the questionnaire data reveals overconsumption of animal products, starchy vegetables and bread and pastry products. This nutritional pattern with a high intake in animal protein, correlated with a lack of diversification, is extremely unsustainable, having a negative impact on human health and environmental health.

This article examines the relationship between household food waste and Gross Domestic Product (GDP) in various European regions, aiming to determine how economic prosperity influences the levels of household food waste. Using comparative analysis of secondary and tertiary data, a synthetic indicator (IpFW) was developed to assess the interaction between GDP per capita and household food waste per capita. Linear correlation analysis was also applied for better interpretation of the data. Despite expectations, higher GDP is not consistently correlated with lower household food waste, challenging economic prosperity and environmental stewardship assumptions. This research highlights the complexity of the interaction between economic factors and household food waste management, revealing a lack of significant correlation even at the regional level. The findings indicate a need to re-evaluate current policies and highlight that improving food supply chains and influencing consumer behavior can promote more sustainable consumption patterns, which is in line with the Sustainable Development Goals.

The study examines the dichotomy between individual dietary autonomy and the broader implications of food overconsumption and waste, particularly focusing on meat consumption’s environmental, health, and social equity aspects. In the context of increasing awareness about the negative impacts of excessive meat consumption, this research explores the potential benefits of modest dietary shifts, specifically a reduction in animal product intake, on natural resources and the environment. Utilizing data from international and Romanian sources, including data about meat environmental impacts, in original research, the article analyzes the water, carbon, and land use footprints associated with different types of meat, emphasizing the significant differences between beef, pork, chicken, and sheep meat. The findings highlight that even a small reduction in meat consumption, such as 100 g per week per capita, can lead to substantial decreases in water use, carbon emissions, and land use, underscoring the importance of sustainable eating habits. Moreover, the study explores the potential of plant-based proteins as viable nutritional alternatives that can mitigate environmental footprints and foster global food security. Conclusively, this work advocates for a balanced approach that respects individual choices while promoting collective responsibility towards sustainable consumption patterns, emphasizing the role of scientific research and public awareness in driving positive change in dietary habits for environmental conservation and health benefits.

The Metabolic Food Waste [MFW (kg of food)], first time developed in 2016 as a new indicator by Serafini and Toti, indicates the amount of food consumed over the nutritional requirements and the impact of this overconsumption on the environment. It is necessary to identify the causes and to develop potential methods to prevent and reduce MFW, at the same time with increasing consumer awareness about unsustainable diets and changing diet habits toward more environmentally conscious consumption patterns. By analysing and corroborating external data available for food waste, nutritional requirements, environmental impact of food waste and consumer behaviour, we identified as primary causes for MFW the lack of nutritional education and little understanding of the nutritional requirements amongst all categories of consumers, no access to appropriate food resources or reduced availability of fresh produced food. We conclude that for the quantification of the negative impact of MFW on both the environment and human health, we need a decisive action to raise consumer awareness for healthy and sustainable diets, together with an uniform worldwide distribution of the nutritious food.