The fear of MSG is oddly persistent. It has an impact on conversations, restaurant menus that gently say No MSG, and even shopping aisles where patrons stop to read ingredient labels. However, MSG often sits in a busy kitchen with cooks working quickly and steam rising from a pot of broth, just like any other flavor, commonplace and unrepentant the disconnect is hard to ignore.
MSG, or monosodium glutamate, is not a modern invention developed in a lab. In an effort to understand why seaweed broth had such a deeply satisfying flavor, Kikunae Ikeda isolated glutamate from it in 1908. That flavor umami was eventually recognized as the fifth basic taste. The same delicious richness may be found in slow cooked meat, tomatoes, and parmesan. MSG simply absorbs it in a more intense form.
| Category | Details |
|---|---|
| Substance Name | Monosodium Glutamate (MSG) |
| Scientific Basis | Sodium salt of glutamic acid (an amino acid) |
| Discovered By | Kikunae Ikeda |
| Year of Discovery | 1908 |
| Commercialization | Ajinomoto |
| Regulatory Status | Classified as safe by U.S. Food and Drug Administration and European Food Safety Authority |
| Natural Presence | Tomatoes, cheese, mushrooms, seaweed |
A part of that story begins in the late 1960s, when a medical magazine published a brief letter describing vague symptoms after eating Chinese food. There was no control over the study. It wasn’t even conclusive. But the media picked it up and kept repeating it until it appeared to be true.
The phrase Chinese Restaurant Syndrome gained popularity, expressing a combination of fear, uncertainty, and though it’s hard to admit cultural bias. You may still hear the echoes when you walk through older Chinatowns. Some restaurants display No MSG signs in an almost defensive way, as if they are apologizing for something that has never been verified by science.
Current research reveals a different story. The U.S. Food and Drug Administration and the European Food Safety Authority are two well known agencies that have consistently concluded that MSG is safe at normal consumption levels. That conclusion has been true for decades, despite advancements in methodology and more scrutiny. Given that it’s one of the more studied food additives, the persistent concern seems irrational.
One of the most persistent myths is that MSG is an artificial substance that is foreign to the body. But everything contains glutamate, including cheese, tomatoes, and even human metabolism. The body is unable to distinguish between glutamate from ripe tomatoes and glutamate from MSG. Both are handled in the same way. This oddly simple fact is sometimes disregarded in broader debates about natural versus synthetic.
There’s also the problem of symptoms. To be honest, some people believe that MSG causes pain, flushing, and headaches. Sensitivity could also exist in rare cases. However, in controlled, double blind tests where participants are not aware of whether they are consuming MSG or a placebo, it has been challenging to consistently reproduce those reactions. Whether or whether MSG is present, symptoms often appear.
The unpleasant question of how much of this is expected is raised by this. People have the ability to persuade. People’s body can sometimes reflect their perceptions of possible danger. It is not imaginary; it is just more complicated than a simple cause and effect relationship. As this has evolved over time, it seems that MSG is now more of a cultural and psychological issue than a scientific one.
There is also the irony, which is hard to overlook. MSG, which is frequently viewed with mistrust, has long been associated with Asian cuisine. Meanwhile, it quietly shows up in Western manufactured foods like canned soups and snack chips without causing the same problems. When you are walking through a supermarket, you rarely look at the labels that list it. There is a double standard, despite its seeming insignificance.
Over the past few years, something has changed. Chefs are embracing MSG more publicly, almost fiercely. Like salt, it is treated in professional kitchens more like a tool than a secret. Additionally, some dietitians note that MSG contains less sodium than table salt, indicating that it might be used to reduce overall sodium consumption without compromising flavor.
Rehabilitation is happening quietly. It’s unclear, though, if public opinion will catch up. Food phobias often persist, especially when they are associated with a person’s identity, culture, or events in life. Even in the face of growing evidence, people tend to cling to what feels familiar.
I feel that MSG’s story says more about us than it does about food science as I watch this gradual shift. It illustrates how easily narratives may emerge, spread quickly, and be challenging to undo. It’s not because people are naturally opposed to facts; rather, it’s because these facts are presented after the narrative has gained traction maybe that’s the real lesson.
MSG was never just a seasoning. It started to stand for fear, misunderstandings, and cultural estrangement. Science has substantially settled the question of its safety. But as it happens, belief and science don’t often align.
i) https://www.sciencehistory.org/stories/magazine/the-rotten-science-behind-the-msg-scare/
ii) https://www.fivethirtyeight.com/features/how-msg-got-a-bad-rap-flawed-science-and-xenophobia/
iii) https://www.theconversation.com/msg-is-back-is-the-idea-its-bad-for-us-just-a-myth-or-food-science-237871
iv) https://www.nationalgeographic.com/health/article/msg-monosodium-glutamate-xenophobia-history