Protein is an essential nutrient that makes up about 15–20% of the human body mass . For a 70 kg person, that’s around 12 kg of protein . These proteins are crucial for maintaining and repairing the body, supporting growth, and ensuring proper development. Protein is everywhere in your body: your bones, skin, hair, enzymes, and immune system cells. In fact, you’re made up of over 10,000 different proteins , each performing specific functions to keep you alive and healthy. How