What is the role of protein in the body?

The role of protein in the body primarily includes the repair and building of tissues. Proteins are essential macromolecules made up of amino acids, which are often referred to as the building blocks of life. They play a crucial role in numerous biological functions, including the structure of cells and tissues such as muscle, skin, and organs. When the body undergoes growth, repair following injury, or changes in muscle mass due to exercise, protein is vital for synthesizing new cells and tissues to support these processes.

While proteins can be converted into energy when necessary, particularly during prolonged periods without adequate carbohydrate intake, their primary function is not energy provision. Storing vitamins is primarily the role of fats and certain cellular structures, not proteins. The transport of oxygen in the blood is mainly facilitated by hemoglobin, a protein found in red blood cells, which emphasizes the specific role of proteins rather than their general function. Hence, understanding the pivotal role of protein in tissue repair and building underscores why it is recognized as essential for maintaining overall health and supporting various physiological functions.