Proteins

Proteins are long chains of amino acids, and your body needs a complete set of the acids in order to build body tissues. Meats contain them all, making them “complete” proteins.
Some plant-based proteins are “complete” but most are “incomplete,” meaning that they are low in one or more of the essential amino acids—but incomplete proteins can be combined to provide adequate amounts of all the essential amino acids.
Recent studies show that eating a variety of vegetables, nuts and grains can combine to give your body the complete proteins it needs.