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.
The Food and Drug Administration (FDA) has classified MSG as a food ingredient that's generally recognized as safe, but its use remains controversial. For this reason, when MSG is added to food, the FDA requires that it be listed on the label.hese reactions â known as MSG symptom complex â include: 1  Headache. 2  Flushing. 3  Sweating. 4  Facial pressure or tightness. 5  Numbness, tingling or burning in the face, neck and other areas. 6  Rapid, fluttering heartbeats (heart palpitations). 7  Chest pain. 8  Nausea.