You know, there's a lot of crap that I don't want my child to eat. For me to say, "please don't feed that to her" requires a lot of balls -- which I don't always have. A simple request of, "please don't feed that to my child" is usually responded to with;
"oh come on, she can't have treats?"
"what's this going to do to her?"
"you can't protect her from everything"
or my favorite, "you give her all organic carrots now, but then one day she'll eat a non-organic carrot and then Bam! Her body won't be used to it" OK -- a carrot that makes my kid go Bam! shouldn't be consumed by any member of the human population and be immediately reported to the Food and Drug Administration (FDA). NOT that they would do anything about it...
So, I am elated that she is allergic to MSG. Because now I can say, "she can't have that she's allergic to MSG" which will be responded to with an "OK."
For the parents reading this who do have balls, how do you handle these people who insist that your child should eat food that, well, isn't even edible?