According To Men's Health ...
It turns out the case against MSG is mostly hype, says Men's Health nutrition advisor Mike Roussell, Ph.D. "The science behind our fears just doesn't hold up," he says.
Monosodium glutamate is just salt combined with glutamate. Salt is essential to health. Your body can't make it, and your cells need it to function. And glutamate is a naturally occurring amino acid that makes foods like soy sauce, aged cheese, and beef so tasty, Roussell says. So when you eat MSG, it's broken back down into salt and glutamate, he says.
"We wouldn't shun a restaurant for serving a grilled strip steak rubbed with powdered mushrooms and topped with blue cheese," says Roussell. "But the chemical compound that gives this meal its incredible flavor—glutamate—is the same compound in MSG."