Section I. Cells and Their Nourishment: The cell: a microcosm of life -- Digestive system: mechanism for nourishing the body -- Section II. Macronutrients and Their Metabolism: Carbohydrates -- Fiber -- Lipids -- Protein -- Integration and regulation of metabolism and the impact of exercise and sport -- Body composition, energy expenditure, and energy balance -- Section III. The Regulatory Nutrients: Water-soluble vitamins -- Fat-soluble vitamins -- Major minerals -- Water and electrolytes -- Essential trace and ultratrace minerals -- Nonessential trace and ultratrace minerals.