In view of the international character of nutrition and interrelationships and meaning of food to all people, this annual series of open-ended books has been started to direct attention to the aspects of human nutrition in regard to the quality of life. It is believed the study of the action nutrients, their interrelationships, and their ingestion in the vehicles called food, encompasses the study of man from conception to death, his evolution past and future, and his survival as a species. The papers for this first volume are taken from two symposia on nutrition. One, the Symposium of Biochemistry and Nutrition on Proteins and Biocatalysts, took place in Teheran, Iran, May 19-22, 1969; the other, Dysnutrition and the Seven Ages of Man, was held at the University of California, San Francisco, January 10-12, 1969. Topics range from a philosophical analysis of malnutrition in developing countries, to a description of undernutrition in the affluent United States. Food conservation and utilization, resistance to infection, infant malnutrition and later learning, pregnancy, boredom, physical activity, wound healing, dietary management, preventive dentistry, and psychophysiology, as related to nutrition, are among other topics considered. Each paper concludes with a bibliography. (BL)