Abstract: Four nutrition study units for nurses are provided. The unit on proteins provides basic knowledge needed for nurses to anticipate problems related to protein intake and to assist patients with protein nutrition. Explained are protein functions, protein content of foods, protein needs, protein utilization, protein deficiency, and structure of proteins and amino acids. The unit on carbohydrates provides information on carbohydrates as they relate to health maintenance and the treatment of disease. Explained are carbohydrate structure, functions, food sources, amounts needed, utilization, and problems related to consumption. The unit on lipids provides a theoretical framework nurses can use to interpret the literature on lipids. Lipid metabolism abnormalities and diet modifications are discussed. The unit on diet and coronary heart disease discusses the relation of diet to risk factors in atherosclerosis and coronary heart disease, diet in prevention of atherosclerosis, diet for hyperlipidemia, and guides for assisting patients on fat-controlled diets.