Soybeans are considered a "complete protein" source in that they provide all the essential amino acids for human nutrition.However, some scientific sources disagree on this as the best measure of "complete protein."Soybean protein is essentially identical to that of other legume pulses (that is to say, legume proteins in general consist of 7S and 11S storage proteins), and is one of the least expensive sources of dietary protein. For this reason, soy is important to many vegetarians and vegans.
