Theoretically speaking you could be oversensitive to the substance, so in small amounts it should be fine for your body, and in larger amounts you'd get all those alleged symptoms.
However in practice that means that a lot more things than just crystalline MSG would trigger those symptoms - like mushrooms, tomato paste, soy sauce, Parmesan cheese, meat broth, etc.
Babies are also ingesting large amounts of glutamate when being breastfed. Which is why I believe 99.99...% of glutamate "intolerance" / "allergies" are caused by the nocebo-effect.
It probably comes down to eating a lot of very salty foods and not recognizing that you've had too much salt. Common symptoms include temporary high blood pressure and headaches, the same issue that people claim they have with MSG.
Just because it's a neurotransmitter in your brain, doesn't mean it can't have adverse affects elsewhere in the body (conversely, there are many drugs that have an effect on the body, but no effect on the brain due to the blood brain barrier), i.e. the body is complex.
That said, it's generally recognized as safe and may potentially cause side effects in some people but there isn't much evidence for it, and MSG is one of the most studied food additives in the world.
True. I guess nicotine is a good example of this. When delivered directly into the bloodstream (via inhalation or a nicotine patch) it is an addictive stimulant. When ingested orally it is poisonous.
Glad I am not allergic. I keep a small jar in the kitchen and it is easily the most interesting seasoning to experiment with.
Meanwhile, my sister claims to be severely allergic. It's crazy given the number of items in her regular diet containing MSG if you read the label. Sadly, she is full of excuses like this she uses to rationalize an insanely high fat diet and is obese.
I have also used MSG to reduce both fat and salt in the meals I cook. A big reason I asked this question is that I wanted to know if there is a legitimate reason I should tell people that the food I cooked for them contains glutamate. Because the reaction is often similar to your sisters.
And guess what, if I don't tell them, nobody is experiencing any form of side effects.
Allergy doesn't mean instant death. I have a pollen allergy but the symptoms are sneezing and itchy eyes. I have a nut allergy but the only symptom is an itchy mouth and throat. I still live even though I'm often enough in contact with the chemicals that make my body go "no".
So if MSG allergy was a thing (which it doesn't seem to be, based on my quick Google search) then it would not cause people to die necessarily.
I think it makes a difference whether it it is in your lungs temporarily, or constantly interacting with tiny neurons in your brain. I honestly don't know for sure, though, so take this with a grain of salt.
Since the "S" in MSG is salt, yeah, they would all die. I might be wrong, but, I'm pretty I read a paper years ago that said an allergy to salt was impossible. It's one of those base elements that don't seem that important until it is. It would be the same as allergic to hydrogen.
No, the "S" is sodium. MSG (monosodium glutamate) is a sodium compound like salt, but the anion is different - for salt it's chloride, for MSG it's glutamate.
It could be theoretically possible that only the anion caused you some hard. For example, sodium cyanide is extremely poisonous, but also a sodium salt. In practice however glutamate is just some aminoacid.
I get that genetically msg is not a problem for a huge amount of the population, but what about someone like me that genuinely has msg reactions that require me to do a time out at restaurants because of body shock loading?
It's no different from Asians that don't process alcohol so well. Some want a time out because genetically they're in a group that might not like alcohol.
The difference is that glutamate is produced by our bodies naturally. Alcohol (Ethanol) is not. It is literally poison to every human, which is why the liver takes a lot of damage when removing it from your body.
Cool and fun except for people that for whatever reason have a problem with msg, and you're busy telling them it's a made up problem. Being a sufferer I almost believed it until - who should appear - my kid outside the restaurant because of same said problem. We both sat there with our made up food processing problem. Tell yourself whatever - like I care.
I tried to Google "body shock loading" because I'm unfamiliar with this term, but mostly found articles about going into shock. May I ask what this experience is like for you? What do you feel when exposed to glutamate? Are OTC antiinflammatories/antihistamines an effective treatment for the reaction of do you need some kind of steroid?
Antihistamines sounds like something to try. I do get hayfever, so it might be worth the effort.
It's like a headache pressure without any headache pain, and it loads up all the way down my chest. It can be very crushing in tropical heat, and possibly include headache pain with alcohol consumption. The heaviest moment I've ever suffered was a bit of a knockout pressure. Like concussion.
I'm usually very apologetic about it because you're having a huge reaction to something a proud restaurant prepared.
There's a lot of Asian pride in telling me it's not msg, and doing studies to prove it's not msg. (Asian pride as described by Asian pride experts of that ethnicity).
However, the horrible fact remains that for some people MSG is proving to be the cause of reactions. The usual source is restaurants using MSG, but just to clarify the matter we find out the hard way when friends get too happy with MSG.
As much as I want to believe in rigorous science I still have to tell you that you're not considering the actual sufferers. It's a reaction akin to getting punched, and I definitely know about it.
It wounds the pride of the occasional restaurant that doesn't really want people to walk out because of a medical problem. I'm sorry about that. I'll look into possible solutions. It's my fault for really enjoying Asia and Asian food.