Other independent researchers confirmed his observations. Those industry-sponsored studies were methodologically inadequate, statistically unsound, and came to conclusions which did not follow from the results of the studies. For glutamate is one of the substances that make up protein. And we all know that protein is essential to maintaining good health. But protein is like a jigsaw puzzle.
Every puzzle is made up of many pieces.
The pieces in any one puzzle will differ in size and in shape, and you can buy puzzles that have pieces that are quite different from one another. Like puzzles, different proteins are made up of different amino acids. And, like puzzles, which can't be completed when a piece is missing, a protein is no longer the same protein when amino acids that once were a part of that protein are missing or broken. And when amino acids are just lying around like loose puzzle pieces, you don't have a protein at all. It's one thing to eat protein.