If a Ph.D. level medical researcher cannot find any studies that corroborate "Chinese restaurant syndrome" due to MSG in the world's foremost medical research database, that should tell you something.
Your family's experiences boil down to "My father ate at a Chinese restaurant and then went into A fib!" I'm sorry, but that is nearly meaningless as evidence. I broke my pelvis within half an hour of drinking Coke; does that mean that drinking Coke causes broken pelvises? I actually humored you a little by suggesting a physiologically plausible cause for the A fib. In reality, none of those sources you mentioned as "proving" the dangers of MSG do any such thing.
The Mayo Clinic website says, "However, researchers have found no definitive evidence of a link between MSG and these symptoms. Researchers acknowledge, though, that a small percentage of people may have short-term reactions to MSG. Symptoms are usually mild and don't require treatment. The only way to prevent a reaction is to avoid foods containing MSG." (Underlined for emphasis)
In other words, in the face of lack of evidence, researchers simply humor the "MSG is BAD!!!" fanatics by telling them to avoid it. (Probably not that easy, since glutamate is in nearly everything, but NVM.)
And, since you mentioned it, I'll also quote from WebMD:
Why it's controversial
Many people claim to have bad reactions when they eat food seasoned with MSG. In the late 1960s, people started talking about "Chinese restaurant syndrome," alleging that food prepared with MSG at Chinese restaurants made them sick.
What the research shows
Many studies over the past four decades have tested the idea that some people may be sensitive to MSG. Most scientists today agree that if there is such a thing as a sensitivity or allergy to MSG, it's extremely rare. Studies haven't found any regular pattern of symptoms that could be typical of a reaction to MSG. Also, people are more likely to have symptoms if they're given MSG crystals than if they eat the same amount of MSG mixed with food.
"It's very hard for me to believe that there's a problem with it," Nestle says. Nevertheless, some still swear that they have bad reactions to MSG. "People who think they have problems with it should avoid it," she says.
Hmm, just like the Mayo Clinic expert, the WebMD expert also recommends humoring the "MSG is BAD!!!" fanatics by telling them to avoid it, while pointing out that there is no evidence for "Chinese restaurant syndrome."
I'll point out that all reputable medical research is indexed in PubMed (www.pubmed.org). You can access it just as easily as I can; if there are tons of studies that I somehow missed, you are more than welcome to provide your search terms and prove me wrong. But all I see there are studies supporting the general safety of MSG in usual food quantities. I actually highly suggest learning how to conduct searches in PubMed so that you can check pseudoscience claims for yourself; it's greatly empowering to be able to reject quackery because you understand exactly how the quacks are trying to bamboozle you.
BTW, for your edification, here's a list of causes of A-fib (taken from wikipedia, and appropriately referenced):
Causes
AF is linked to several cardiac causes, but may occur in otherwise normal hearts. Known associations include:
As for the immune-compromised, there are signs in our pediatricians office that warn newly vaccinated to avoid these people so that’s really not an issue. Your stance on the subject is quite frightening!
The reason for those signs is that it takes 2 weeks to build up an immunity following vaccination; therefore, someone who has just been vaccinated can still catch the disease in that time and pass it on to someone who is immunocompromised. What those signs omitted is that if you have never been vaccinated, you are always a danger to the immunocompromised and should stay away from them. Always. Forever. Of course my stance is frightening--infectious diseases kill. That should frighten anyone. And people like you who don't take infectious disease seriously endanger everyone.
Should I put my daughter back on dairy and then make her puff albuterol all day and night? How disgustingly obtuse of you to think that is the solution to her asthma problems instead of just pulling her off diary! The same for my son’s mild ADHD melt downs. Oh yeah, what a great scientist you are to suggest those dangerous meds (which I believe most school shooters were on) are a better solution than simply avoiding MSG! I find it very difficult to believe you are a scientist! A real professinal would welcome the input of others’ experiences. Lord have mercy! How limited our scientific advancements might be if all scientists were like you! Further more, your post to another FReeper regarding your ideas on limiting activities of the unvaccinated suggests you are also not aconservative. How about we also have special schools for them and make the unvaccinated sit more towards the back of the bus? Why not regulate special drinking fountains and even restaurants for the unvaccinated? Hmmm? Go back to DU and spout your unquestioned faith to Big Gov and their love of government regulations there please. That’s not how conservatism works. If I don’t like vaccines I don’t vaccinate, but I certainly don’t insist that others be regulated to my standards. If a conservative thinks vaccines are important she vaccinated, but she does not demand others do also. And don’t try that “it’s for the children” bologna because conservatives know how you libs love to use them as human shields.
My goodness, now you are jumping off the deep end, making all kinds of assumptions and putting words into my mouth that I never said. I can't say I'm surprised, since, in my experience, people who latch on to pseudoscience and quackery never let go, despite mountains of evidence that they believe in nonsense. Personally, I have no attachment to a belief that is so strong that I refuse to let go of it when I see evidence that it is not true. I also am not surprised by your quick devolvement into insults and rudeness. Although you are trying to insult me by calling me a liberal, your behavior is very much what I have come to expect from liberals--baseless smears, accusations, and everything. There is *nothing* conservative about endangering the lives of other people just so that you can indulge in your anti-vac paranoia. That's the behavior of a spoiled brat liberal.
You’re a loon. Go study something scientific, like maybe how we were told eggs were unhealthy but now it turns out “experts” were wrong and they are healthy.