The food additive monosodium glutamate, or MSG, has been linked to many health concersn including migraine headeaches and even hyperactivity in children.
If you see the word "hydrolyzed" in any ingredient list on any food item, the product contains MSG. Some companies try to not use the term MSG and will use other terms such as hydrolyzed and terms from the list below to make their customers think the product is MSG free.
These terms are other hidden sources of MSG -
Autolyzed yeast, calcium caeinate, gelatin, glutamate, glutamic acid, hydrolzed corn gluten, hydrolzyed protein (such as wheat, soy or vegetable protein), monopotassium glutamate, sodium caseinate and textured protein
Please read all product labels and be sure there is not a hidden source if your favorite grocery item. The above are most commonly found in processed and boxed foods.