Nutrition is an active science, and staying current is paramount. To that end, the second Canadian edition of Understanding Nutrition builds on the science of previous U.S. editions as well as the first Canadian edition with the latest in nutrition research. The second Canadian edition presents the core information of an introductory nutrition course. The early chapters introduce the nutrients and their work in the body, and the later chapters apply that information to people's lives - describing the role of foods and nutrients in energy balance and weight control, in physical activity, in the life cycle, in disease prevention, in food safety, and in hunger. The mission of this text is to reveal the fascination of science in nutrition and provide readers with an understanding of nutrition so that they can make healthy choices in their daily lives.