The United States, the world's largest economy, accounts for approximately 25 percent of Nominal world GDP, and the seven largest economies (amalgamating the European Union economies as one) account for 75 percent of the total.
MayoClinic.com states that some people report feeling flushed or hot in the face or neck after eating MSG. There may also be sweating, itching, and numbness, tingling or a burning sensation in the face, neck and chest. MSG reactions are generally mild. However, some people experience swelling or tingling around the mouth, lips and tongue, which can result in complications such as trouble breathing; this requires immediate medical attention.
As the name implies, monosodium glutamate (MSG) is the product of sodium (Na) and glutamate, known as a sodium salt. The glutamate in MSG is made via fermentation of starches, but there is no chemical difference between glutamate in MSG and glutamate in natural foods.