A practical manual on human nutrition that explains how foods build blood and body, outlines the chemical and physiological processes of digestion, and presents dietetic principles for varying needs. It classifies foods, supplies tables of food values and sample menus, and offers guidance on preparation, mastication, meal timing, exercise, and remedial regimens to correct specific bodily conditions. Emphasis is placed on forming sound eating habits, economizing digestive effort, and using scientific knowledge of food composition to maintain health and prevent disease.