Food—how we produce, prepare, share and consume it—is fundamental to our wellbeing. It also connects the human body to the complex and dynamic systems of our environment. This is more significant than ever before in human history, as climate change and increasing population impact on global ecosystems. This fourth edition of has been completely rewritten to reflect an ecosystems approach to human health. It is shaped around four dimensions of human nutrition: biology, society, environment and economy. provides a comprehensive overview of food components and the biochemistry of foods and digestion. It outlines nutrition needs at different life stages, dietary disorders, and social and cultural influences on food selection and consumption. It also explores the increasing influence of technology on agriculture and food preparation, and recent research into intergenerational nutrition and nutrigenomics. At every stage it points to how you can impact your own health and the health of others as a global citizen and as a health or other food-system-related professional. Extensively illustrated with informative graphs, diagrams and data, and with examples, glossaries and reflective exercises, is the ideal introduction to the field of nutrition and dietetics for the 21st century, and a valuable professional reference for early career dietitians.