Nutrition is well-recognized as a necessary component of educational programs for physicians. This is to be valued in that of all factors affecting health in the United States, none is more important than nutrition. This can be argued from various perspectives, including health promotion, disease prevention, and therapeutic management. In all cases, serious consideration of nutrition related issues in the practice is seen to be one means to achieve cost-effective medical care. These modules were developed to provide more practical knowledge for health care providers, and in particular primary care physicians. The purpose of this module is to instruct the primary care physician in the determination of the role nutrition plays in the etiology and treatment of behavioral and neurological disorders. Diet and the nutritional status of the individual are related to behavior during various stages of the life cycle and under a variety of conditions. Included are learning goals and objectives, a self-check of achievement with regard to goals, resources for physicians and 117 references. Appendices include tables of health problems and associated risk factors, nutritional assessment and intervention guidelines, federally sponsored food assistance programs, and self-help groups and national treatment centers for eating disorders. (CW)