Thoroughly updated, this fourth edition of a bestseller cut through a wealth of somethings conflicting new findings to continue to provide a clear introduction to nutrition and metabolism. Via basic biochemistry, it explains the scientific principles underlying our current understanding of interactions between diet and health, examines nutrient function and metabolic pathways, and explores the scientific basis of various dietary goals. New features include a list of key points at the end of each chapter and the addition of open-ended case-based problems. The accompanying CD contains PowerPoint ® presentations, self-assessment exercises, a virtual laboratory, and a nutrient analysis program.