It is a pleasure to present the book, Evaluation and Treatment of Obesity, for reference and textbook use. The text is an outgrowth of the Obesity­ Weight Control Track of the 1982 La Crosse Health and Sports Science Symposium, sponsored annually by the La Crosse Exercise Program, Uni­ versity of Wisconsin-La Crosse. With versatile faculty, topics, and attend­ ing professionals, the Obesity-Weight Control Track stimulated an effort to produce interdisciplinary resources on obesity. Out of this effort, three books have been compiled and edited. This book, Evaluation and Treatment of Obesity, introduces an interdis­ ciplinary, practical approach to obesity management. The other two books, Nutrition and Exercise in Obesity Management and Behavioral Management of Obesity, expand on the basic theories introduced in this book, providing in-depth information of value to the practicing profes­ sional. These three books apply the latest information from the fields of medicine, nutrition, exercise, and psychology to the problem of obesity. The information is intended to guide health professionals in the inter­ disciplinary management of obesity. In 1983 the Obesity-Weight Control Track focused on controversial issues of theoretical and practical concern. The speakers from this track contributed their expertise to the compilation of two additional books. Thus, Trends and Controversies in Obesity Research and Innovation in Obesity Program Development will complete the series. Consider the five volumes a consolidated, comprehensive reference related to the growing, interdisciplinary field of weight control.