Here is this week's Food Safety Tip from the Organic Consumers Association:
Monosodium glutamate (MSG) is one of the most common and hazardous food additives on the market. MSG is reportedly more toxic than alcohol, tobacco and many drugs. MSG is an excitotoxin, so it tricks your brain into wanting to eat more and more foods containing the ingredient, even if you are already full. Side effects of MSG include: obesity, eye damage, headaches, depression, fatigue and disorientation. Food manufacturers know that health-conscious consumers try to avoid MSG, so it is oftentimes not listed in a product's ingredients. MSG is banned in organic foods.
Here's a list of ingredients that ALWAYS contain MSG:
Autolyzed Yeast -- Calcium Caseinate -- Gelatin Glutamate -- Glutamic Acid -- Hydrolyzed Protein -- Monopotassium Glutamate -- Monosodium Glutamate -- Sodium Caseinate -- Textured Protein -- Yeast Extract -- Yeast Food -- Yeast Nutrient
For more information, check out this article.