As a chef and menu builder it is important that we bring these issues to light. Food seasoning has long history in Asia. I was holding a food seminar few days ago in Tokyo and one of my American audience raised the question about the health impact of this seasoning. I was surprised because here in Japan, we call this UMAMI and is a very popular food seasoning with a long history. In my years in this industry in Japan, I have not heard about the case of health issues with MSG. Actually, I do encourage people to use it in cooking. I went in to research about this issue and came across this site: http://www.ajinomoto.com/features/aji-no-moto/en/truth/. This site is a well detailed site about the MSG controversy. Hope you find it helpful.