MSG, popularly known as Ajinomoto across South Asia, the brand name for the company that has been producing monosodium glutamate since 1909, is a mysterious ingredient. Many people blame it for headaches and nausea after a meal of Chinese food, but whether or not MSG is actually harmful is hotly debated. The extra tanginess and oh-so-delectable flavour at your local Chinese eatery? That is the taste enhancer MSG. The same reason why you cannot reproduce the same flavours in homemade Chinese food is because of the absence of MSG, which is deemed unhealthy by most Indian households, perpetuated by boomers and proudly carried down by some millennials.
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It may surprise you to find that MSG is neither dangerous nor toxic, and may really be part of a healthy, balanced diet. So, why do so many people avoid it? The answer is based on anti-Asian bigotry. If evidence does not support MSG as a dietary villain, why have so many people grown to despise and dread it? The solution is not in biology, but in prejudice. The mere phrase "Chinese Restaurant Syndrome" hints to the misconception's sinister core: it singled out Chinese cuisine and, by implication, Chinese people as dubious. This framing drew on historical Western preconceptions, depicting Asian cuisine as unsanitary, unusual, or untrustworthy.
How The West Turned MSG Seasoning Into A Scandal
When MSG was originally discovered, the United States intentionally restricted the number of Chinese immigrants who came here. The Chinese Exclusion Act, introduced in 1882, was extended multiple times before being repealed in 1943. Anti-Chinese prejudice was widespread, owing primarily to Chinese labourers being engaged as labourers because they were ready to work for less than fair wages.
This was the history and context against which a 1968 letter to the New England Journal of Medicine claiming illness after consuming MSG sparked an anti-MSG crusade. In the 1960s, when the Chinese-American doctor Robert Ho Man Kwok wrote a letter to the New England Journal of Medicine stating that he got sick after consuming Chinese food, he believed that his symptoms could have resulted from either the consumption of alcohol, sodium, or MSG.
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The notion of "Chinese Restaurant Syndrome," which attributed symptoms like flushing and sweating to MSG, has been largely debunked. The symptoms reported were more likely caused by other factors, such as alcohol, high sodium content, or other food ingredients. Subsequent research on MSG included poorly planned experiments with exaggerated MSG levels, thus adding to the detrimental beliefs around the condiment.
According to the Journal of Headache and Pain, in ‘Does monosodium glutamate really cause headache? A systematic review of human studies’, a host of misinformation was spread about MSG, which was related to the then-present biases against Chinese immigrants and their cuisines. The letter resulted in the designation of Kwok’s symptoms as “Chinese restaurant syndrome,” which later became the “MSG symptom complex.”
MSG Was Guilty Until Proven Innocent; Chinese Food Still Is
If you take a look at the Journal Of The Academy Of Nutrition And Dietetics, it explains that the main issue was never about whether MSG was safe to consume. The problem arose when the detrimental hypothesis was completely disproven, yet many people continued to retain a double standard that exclusively targeted Chinese cuisine. In order to avoid frightening away patrons, many Chinese eateries in America still display signs stating that they do not use MSG in their meals. Often, their customers are unaware of the realities of MSG, but unfortunately, these signs contribute to the idea that MSG is hazardous.
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Overcoming culinary ignorance may become a hindrance for a family to make a living, as can the parallels between the racist labels "Chinese Restaurant Syndrome" and "China Virus" and the double standard and ignorance that disproportionately and continuously impacts people of colour.
The problem was that most of the anti-MSG science was really faulty. In one well-known experiment, individuals were given huge amounts of MSG on an empty stomach, which is likely to induce temporary discomfort in anyone, similar to consuming too much salt or vinegar alone. Other studies did not employ sufficient blinding, so participants knew when they were taking MSG and may have imagined symptoms due to expectation or fear. Over the next few decades, when more serious study was completed, the scientific community came to the same conclusion: at normal dietary levels, MSG isn't the bogeyman it was portrayed to be.
Nobody told you about 'Italian Pizzeria Syndrome' from the glutamate-rich parmesan on your pasta, or 'Mom's Home Cooking Syndrome' from the umami in a pot roast. However, Chinese eateries were falsely portrayed as carriers of a fictitious sickness. "Do you know what causes Chinese Restaurant Syndrome?" Racism," the late Anthony Bourdain famously said in an article for The New Yorker, getting to the chase. He argued that diners were eager to blame a "mysterious Oriential additive" for their post-meal pain rather than, for example, overeating or simply having prejudice put in their brains.
What MSG's Comeback Says About Food, Fear And Prejudice
The targeting of MSG coincided with a larger history of anti-Asian hostility. As per the book titled Education About Asia on the official website of the Association Of Asian Studies, in the nineteenth and early twentieth centuries, Chinese immigrant groups in the United States faced discriminatory legislation and slander. The MSG myth emerged within that cultural setting, making it simpler for people to believe and spread.
Chinese-American restaurateurs faced the burden of this stigma: they had to modify recipes, post "No MSG" signs, and watch diners scrutinise their food with unwarranted scepticism. Meanwhile, primarily white-owned food corporations continued to use MSG in snacks and frozen meals with little attention or anger. The misconception was not just faulty science; it was racial scapegoating that caused significant economic and reputational harm.
MSG is currently undergoing a rehabilitation process, as chefs and customers alike awaken from the long-running moral panic. In recent years, notable chefs and scientists have fought back against the anti-MSG narrative. It's a stunning reversal for a brand that was once viewed as a public adversary. While a kernel of old dread appears now and again (sometimes repeating outdated knowledge), the overall tendency is toward acceptance. Many people have realised what research has shown all along: MSG is, at its heart, a helpful flavour enhancer with an undeserved poor reputation. The true lesson is about cultural humility more than chemistry.