MSG or monosodium glutamate (E621) shows the hidden danger in our food today. It makes us fat. MSG is used in thousands of products, such as snacks, soups, sauces, meats, flavored potato chips and most Chinese food. Trade names of MSG include Ajinomoto, Vetsin and Accent. MSG is 'hidden' in many other names, such as yeast extract, hydrolised protein and flavoring.