This document discusses nutrition and nutritional guidelines. It defines nutrition as the study of how the body uses food. Nutrients in food help maintain the body and provide energy, build cells and tissues, and regulate bodily processes. The document lists vitamins, minerals, protein, carbohydrates, water, and sugars as examples of nutrients. It provides 10 nutritional guidelines, including eating a variety of foods everyday to get needed nutrients, eating more vegetables and fruits for vitamins, minerals and fiber, and consuming lean meats, dairy, and calcium-rich foods for healthy bones and tissues.