20 Delicious Foods High Protein Sources

Various Functions of Protein

As a source of energy
Protein is an important source of energy for the body in addition to fat and carbohydrates. Similar to carbohydrates, protein contains 4 calories per gram, while fat supplies more energy, which is 9 calories/gram.

Build and repair body tissues
Protein is a "bricks" that play a major role in making up almost all parts of our body, such as muscles and bones, heart, lungs, brain, skin and hair. Not only that, protein is also responsible for maintaining and replacing tissues in the body that have been damaged.

Forming antibodies
Protein helps the body form immunoglobulins commonly known as antibodies. Antibodies play an important role in fighting bacterial or viral infections. In addition, antibodies also help the body to prevent disease from the same bacteria or virus in the future.

Once your body produces antibodies against certain bacteria or viruses, the immune cells in your body never forget how to reproduce them. So, if later the bacteria or virus attacks again, your body will be able to fight it off more quickly.