Food provides nutrients like carbohydrates, proteins, fats, vitamins and minerals that fuel our bodies and allow us to grow, have energy, repair damage and stay healthy. There are different types of carbohydrates like sugars found in fruits and starches found in grains, while proteins build muscles and heal wounds and are found in foods like milk, eggs and cheese. Fats provide more energy than carbohydrates but should be consumed in small amounts. Vitamins and minerals also keep us healthy and help us grow, with calcium, iron and iodine being especially important. The food pyramid guides us to eat a balanced diet with a variety of foods that provides all necessary nutrients.