This book provides coverage of all aspects of lipid biochemistry and is intended for undergraduates, although it will also be useful for postgraduates and research workers as a first reference. This fourth edition has been rewritten and restructured to incorporate recent advances and to present a broader range of material. The organization of the content is based on an approach which classifies lipids primarily in terms of their functions in living organisms, rather than according to chemical structure. The first chapters deals with definitions, terminology and chemical classifications, and the second with isolation, separation and detection of lipids. Subsequent chapters, each of which incorporates a brief outline of the lipids, then discuss their biochemistry and functions. A feature of this edition is a more detailed treatment of the nutritional and chemical aspects of lipids. The book takes examples from a wide range of living organisms, including microorganisms and higher plants, as well as animals. The book is illustrated and cross-referenced for the convenience of the reader.