MSG - Not as toxic as the people who claim it is.
Folks, let's try to inject a little reason into these poor deluded souls - I might suggest using the large veterinary syringes, since their reason deficit appears to be extreme. Monosodium glutamate (MSG) is simply the sodium salt of glutamic acid - a very common amino acid.
Immediately upon ingestion - literally as soon as it hits your saliva - it dissociates into glutamate (the ionized form of glutamic acid) and sodium (a component of table salt). Thinking that this causes neurological disorders, obesity (unrelated to simply stuffing too much food into your pie-hole) and other mysterious ailments is madness. And I mean that in a caring way.
If you eat anything containing protein, your own stomach acids and proteolytic enzymes will liberate large quantities of glutamate, much of which will become ionized upon reaching the alkaline environment of your duodenum (assuming that your pancreas is working). The only difference between getting a load of MSG in your soup and getting a load of glutamate from your steak is in the timing. MSG provides glutamate in a "pre-digested" form, which may explain the people who experience a headache from eating foods with MSG.
However, apart from headaches (and the data is still not rock-solid on that), no other health problems can be laid at the (metaphorical) feet of MSG. If the folks at "Truth in Labeling" or "MSG Myth" (another unintentionally ironic title) had any data to support their claims, they would have more than assertions, anecdotes and wild, unsubstantiated conspiracy "theories" on their websites. Seriously, these folks are worse than the thimerosal-causes-autism crowd.
There. That should be enough to get me my rightful place on the MSG "wall of shame."