Our body needs to take for its survival some eatable substances from the environment. These substances or materials are used by the body to replace the spent out energy and they are known as food.
Food is of utmost importance for the body. No one can survive without food for long.
Food is required to fulfill the following needs:
1. Food produces energy for various activities in the body.
2. Food helps in the growth of the body and repair and replacement of tissues.
3. It provides materials to fight against diseases and thus protect the body.
4. Food controls and regulates various activities of the body and keeps man healthy and free from diseases.
