Over the past 15 years or so I've become very allergic to many things. Therefore, I try to eat only what I call 'pure food' - nothing, ever, out of a box unless it's oatmeal, barley, etc. Absolutely no MSG, sulphites (some medicines, anesthesias, wines, mustards, some vinegars), not much bread, no shell fish, no pizza (cheese/salt) nothing from a salad bar in a restaurant. I mistakenly ordered a bagel sandwich a couple of weeks ago while we were out, thinking it was OK....asparagus, egg white, mushrooms.......for hours I couldn't get the words out, foggy, couldn't concentrate, etc. "something" was in it. I feel for any young person who must be careful of what they eat - it is a full time job. Don't eat beef but once or twice a year. It is what it is....... Read the labels - if you can't pronounce it, don't eat it!!