Food is one of four major factors.provides nutrition, sustenance and growth to human body. We need to eat healthy. There are 5 groups of nutrients the body needs. 1. Protein; Nutrients such as proteins that are derived from milk, meat, eggs, and beans. 2. Carbohydrate; Nutrients such as carbohydrates derived from starch, sugar, rice and taro it. 3 and 4. Vitamins and Minerals; Nutrients such as vitamins and minerals derived from vegetables and fruit. 5. Fat; Nutrients such as fat derived from oils and fats from plants and animals. But there is one thing that is most important to your body is water. Food is the necessity of life.