The book explores how biodiversity in food systems can be strengthened through informed and intentional consumer action. Moving beyond traditional supply-side approaches, this edited volume positions consumers as active agents in shaping sustainable agri-food networks. This is a part of the Sustainable Development and Biodiversity book series.  Drawing on interdisciplinary research, global case studies, and innovative frameworks, the book examines mechanisms such as community-supported agriculture, participatory guarantee systems, citizen science, and ethical marketing strategies. It highlights how these pathways can foster demand for biodiverse, nutrient-rich, and ethically produced foods, while addressing pressing challenges in nutrition security, climate resilience, and socio-economic equity. The chapters integrate insights from food science, agroecology, consumer behavior, and sustainability studies, offering practical guidance for academics, policymakers, NGOs, and industry professionals. By bridging ecological and behavioral dimensions, this volume provides actionable strategies for transforming agri-food systems into resilient, inclusive, and health-promoting ecosystems. The book is an essential read for scholars and practitioners in sustainable agriculture, food technology, nutrition, and environmental policy. It also serves as a valuable resource for graduate and postgraduate courses in life sciences, agricultural economics, and food systems governance.