We need food because the food that we eat contains all the nutrients such as proteins, fats, carbohydrates, vitamins and minerals. These are necessary for the growth of our body. Food gives us the energy to do work and keeps us fit and healthy. It also helps us stay fit and healthy, and protects us against several diseases.

Nutrients are the substances found in food that are needed for biological activity and are essential to health and life. There are five types of substances that we have categorised under nutrients - carbohydrate, protein, fat, vitamins, and minerals. Carbohydrates and fats provide energy to our bodies. Proteins help in repairing and building body tissues. Vitamins and minerals help in healing wounds, boosting immunity, etc.