Food is anything ingested. Food provides the body with the necessary nutrients to stay healthy. Food comes from plants and animals. Human beings consume both plant and animal products. Food is traditionally obtained through farming, ranching, fishing and other means. After food is obtained, it may be eaten raw or undergoes some preparation processes to ensure safety or to add flavor. Eating food may simply involve washing, cutting or adding spices on it. It may also involve cooking, fermentation and other combinations. Other than solids, drinks are also considered food.To get the much needed nutrients, a human being should eat a variety of food everyday in adequate amounts based on age, gender and lifestyle. There are three basic food groups on which to base a daily diet energy-giving food, body-building food and regulating food. Foods that provide the body with energy include carbohydrates and fat-rich foods like cereals, root crops, sugars and sweets. Body-building foods aid in growth and development. These include protein-rich foods like meat, fish, poultry, milk and eggs. Regulating foods help the body system function properly. These include foods rich in vitamins and minerals such as green leafy vegetables and fruits.To make sure that the body gets the necessary nutrients everyday, food intake should include these three basic food groups for a balanced diet.