The primary role of protein is to build the many different types of body tissues and other essential compounds like hormones. Our bodies contain 10,000 to 50,000 different types of proteins. These proteins are in a constant state of flux, being broken down into amino acids, recycled and rebuilt, and oxidized to provide energy. Each protein is designed for a special purpose in a particular tissue. When we eat food proteins, whether from meat, grains, vegetables, or diary products, our bodies must break them down into amino acids in order to rearrange them into new sequences.
Protein is, therefore, essential.
A constant supply of nutrients is necessary to sustain life. The amount of protein needed by each person to stay healthy depends on their gender, height, muscle mass, activity level, age, and health condition. Simply put, a person needs to balance how much protein they eat with how much the body uses and loses. Protein Use Our bodies respond to different proteins in different ways, depending on several factors including how healthy we are and what protein foods we eat. Protein will be used most efficiently if it is accompanied by carbohydrate, fat, and a variety of vitamins and minerals.