Here's why:
* Building Blocks: Proteins are made up of amino acids, which are the building blocks of cells. They are used to create and repair tissues, organs, and other cellular structures.
* Enzymes: Many proteins act as enzymes, which are catalysts that speed up chemical reactions necessary for life.
* Hormones: Some proteins act as hormones, which regulate important bodily functions like growth, metabolism, and reproduction.
* Antibodies: Proteins are crucial for the immune system, forming antibodies to fight off infections.
While other nutrients like carbohydrates and fats are essential for energy and other functions, protein is unique in its role as the primary building material for cells.
