I. Basic Nutrition Principles A. Definition 1. Diet - Refers to one s usual pattern of food intake. Nutrition - Study of how the body processes and uses nutrients, substances in foods that are needed for growth, repair and maintenance of cells.
Some nutrients supply energy and regulate cellular activity.
B. Nutrients - Six Classes of Nutrients 1. Carbohydrates and lipids supply energy 2. Vitamins and minerals participate in chemical reactions that regulate body processes 3. Proteins provide the material for tissue growth, repair, and maintenance 4. Water transports materials and participates in chemical reaction 5.