What is MSG what problems does it cause?

Monosodium glutamate (MSG) is a flavor enhancer commonly used in food to amplify umami taste. While it is generally recognized as safe by regulatory agencies, some individuals report sensitivity to MSG, experiencing symptoms like headaches, sweating, and nausea—a phenomenon often referred to as "Chinese Restaurant Syndrome." However, scientific studies have not consistently supported the idea that MSG causes significant adverse effects in the general population. Most people can consume MSG without any problems.