Preface to the Second Edition

Since the first edition was prepared more than 5 years ago, a lot of the large data sets found in that edition have been placed on the web. The reader will note that far more web addresses are given in this edition than in the first edition. By deleting some of the large tables that are now on the web, we then had space to expand this reference text to include a more extensive coverage of basic nutrition concepts. Thus, the reader will note that the book has been reorganized. Part I contains five chapters relating to food. In this section there are web addresses for food composition as well as a broad treatment of food safety, food labeling, and computerized nutrient analysis systems and techniques available for such data analysis.

Part II focuses on nutrition as a science. Basic terminology, intermediary metabolism relevant to the use of nutrients, individual micronutrients, as well as nutrient-nutrient interactions can be found here. In addition, there is a chapter giving web addresses for the nutrient needs of species other than the human. This is particularly useful to the scientists wishing to make interspecies comparisons.

Nutrition need throughout the life cycle and under special circumstances is the focus of Part III. Nutrition during pregnancy and lactation, feeding the preterm and term infant, the toddler, the young child, the adolescent, the healthy adult, and the senior adult is addressed in the chapters of this section. How exercise affects nutrient need and how one can have a healthy well-nourished body consuming a vegetarian diet is also discussed in this section.

Even though we have a large national commitment to provide a wide variety of nutritious food for our population, how do we know whether our people are well nourished? Part IV addresses this question from a variety of perspectives. Education on the national scale through the provision of healthy eating guidelines helps to inform the public of ways to ensure that they are well nourished. Beyond that there are a number of ways to monitor nutritional status of a variety of age groups and cultural groups. These are described in the rest of the chapters in this section.

Lastly, Part V deals with a wide variety of clinical topics with nutritional implications. Starting with medical evaluation techniques and flowing through all the relevant issues awaiting the clinician, nutrition is addressed as these clinical states are described.

Many of the authors of the chapters in the first edition have graciously updated their original contributions and we the editors are very grateful. There are some new chapters as well as some new authors. We hope you will find this multiauthored text an excellent addition to your professional library.

Carolyn D. Berdanier Elaine B. Feldman Johanna Dwyer

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