Because nobody has a reaction to MSG. It's ill effects are entirely fictional.
It has not been proven, and will not be proven, that every single person in the world has no reaction to MSG. All I'm advocating is a little bit of doubt. The human body is complex and not every person is the same and not every biological process is completely understood. We can make statements as a whole, like that most people that think they're sensitive to MSG aren't. But we shouldn't excitedly immediately dismiss a person claiming that something is happening to them.
The reason MSG gets such harsh pushback is that the idea of "Chinese Restaurant Syndrome" or "MSG sensitivity" has been rebutted pretty comprehensively both from an empirical perspective --- decades of studies have never established a link, which according to the narrative of MSG sensitivity should be very easy to do! --- and from a theoretical perspective. In fact, the theoretical basis for the safety of MSG is pretty plain just from the molecule, which makes you wonder how people could be spinning stories about the dangers of chemical MSG at all.
What I'm trying to say is that you shouldn't take that knowledge and then proceed to tell an individual, who you haven't studied, that they are wrong about what is happening to their bodies. People have weird and rare reactions to things all the time. You should have a healthy amount of doubt and realize that maybe you don't have complete knowledge of their bodies. Why is everyone here so certain? Who proved that no person on the planet has any reaction to MSG?
I'll tell you why I care. I'm coming from the perspective of someone that DOES have a rare and strange immune system reaction to a common food. I've seen doctor after doctor for years and no one can tell me what it is. I've tested it over and over and over and my doctors all agree with my assessment. But for some reason, I have to deal with a lot of people that tell me I'm wrong because read something on the internet about it being a fad. Why is everyone so damn certain they have complete knowledge of someone's digestive system and immune system?
If you're allergic to tomatoes or salt, then it's a personal thing, not a general property of tomatoes or salt.
And you have an example of a food anywhere that meets that standard? Literally nothing meets this ideal of "safety", so I don't understand why you're OK with peanuts or shrimp when those are clearly shown to be death sentences for some people.
