This document summarizes key aspects of nutrition and superfoods. It defines nutrition as the study of food and how the body utilizes it. Nutrients in food allow the body to function, sustain life, promote growth, and protect against disease. Superfoods are foods that are especially nutritious, including whole grains, fruits, vegetables, lean proteins, low-fat dairy, nuts, seeds, and healthy oils like olive oil. Choosing a variety of superfoods and following dietary guidelines can help ensure an adequate, balanced, calorie-controlled, and moderate diet for optimal health.