Project Achilles studies the affects of MSG on the human body.
"In Greek mythology, when Achilles was a baby, it was foretold that he would die young. To prevent his death, his mother Thetis took Achilles to the River Styx, which was supposed to offer powers of invulnerability, and dipped his body into the water. But as Thetis held Achilles by the heel, his heel was not washed over by the water of the magical river. Achilles grew up to be a man of war who survived many great battles. But one day, a poisonous arrow shot at him was lodged in his heel, killing him shortly there after." -- Achilles heel on wikipedia
"MSG is technically a natural substance, so it can be added to "all natural" and "organic" foods." is nonsense (see my other links in this sig). other than that, it's a good post.
MSG is salt (sodium) and glutamate. too much free glutamic acid is a problem. adding salt to food to enhance flavor is not the magic this article would have us believe.
"Glutamic acid is a nonessential amino acid. It can be produced in your body from other amino acids, so you do not need to get it from foods in order to be healthy. Glutamates are salts of glutamic acid."
they deny "adding" manufactured free glutamic acid (MSG) to any of their food, which should be a red flag.
this article mentions use of MSG in restaurants