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Protein is an essential nutrient found in animal products, nuts, and beans. The name protein name comes from the Greek word protos, which means âfirst.â Your body uses proteins in your diet to build new cells, maintain tissues, and synthesize new proteins that make it possible for you to perform basic bodily functions.
Protein is one powerful nutrient. It is part of every living cell, and it plays a major role in your body â from building your body tissues to making important hormones. An adequate protein intake in the diet is important across the life cycle, especially as we age.