Food provides nutrients that are essential for life and growth. It gives us energy, helps build our bodies, and protects us from disease. Plants and animals are the main sources of food, with fruits, vegetables, cereals, eggs, meat, and milk being examples. There are three main types of food: energy-giving foods that fuel our bodies, body-building foods that build muscles and bones, and protective foods that keep us healthy. A balanced diet incorporating all food types is important for wellness.