There is no legitimate, proven, medically endorsed connection to the maladies that most of you are attributing to MSG. You concerns are relegated to the same realm as vampire hunting, Sasquatch and unicorns. Unless you can prove it, don't bring it up. If you don't want to prove it - just don't eat it. And shut up about it. Maybe I have the order wrong.
A study done by Dr. Nicholas Maragakis and Dr. Jeffrey Rothstein posted in the Journal of Neurology called “Glutamate Transporters in Neurologic Disease”, found no connection to claims of neurological damage or migraines from even large quantities of MSG.
Yet another study by Dr. Stevenson called “Monosodium glutamate and asthma” (J. Nutr. 130: 1067S-1073S) found no connection with MSG increasing or worsening asthma.
And most recently last year, an article in the medical journal Clinical & Experimental Allergy reported that after more than a decade of study, no connection between MSG and allergies were ever found.