FactSentinel

Monosodium glutamate (MSG) has been extensively studied for decades, and the scientific consensus is clear: MSG is safe for the general population when consumed in normal amounts. Major health organizations including the U.S. Food and Drug Administration, the World Health Organization, and the European Food Safety Authority have all classified MSG as safe based on comprehensive research. Studies involving thousands of participants have found no consistent evidence linking MSG to adverse health effects when consumed as part of a typical diet.

The belief that MSG is harmful largely stems from a 1968 letter published in the New England Journal of Medicine describing "Chinese Restaurant Syndrome," which attributed symptoms like headaches and numbness to MSG in Chinese food. However, subsequent controlled scientific studies have failed to replicate these findings under rigorous testing conditions. Double-blind studies, where neither participants nor researchers know who receives MSG, show that people who claim sensitivity to MSG typically cannot distinguish between foods with and without it, and they experience symptoms at similar rates regardless of MSG presence.

MSG is simply the sodium salt of glutamic acid, an amino acid that occurs naturally in many foods including tomatoes, cheese, mushrooms, and human breast milk. The body processes MSG identically to naturally occurring glutamate. While a small number of individuals may experience mild, temporary reactions to very large doses consumed on an empty stomach, this is not representative of typical dietary exposure and does not indicate that MSG poses a general health risk.