I understand that additives like MSG are excitotoxins and neurotoxins. They overstimulate the brain and are probably not healthy, though I don't have a good feel for how unhealthy they are. Is it fair to say that a lot of restaurants use these additives in their food? Can you give other examples of additives restaurants or food companies might use that are excito- or neurotoxins? is salt an example? I just want to get an idea and give an idea to clients how unhealthy restaurant food is, and I don't want to exaggerate if it's not that bad. it's just that, when people are making a gradual transition towards more fruit, I don't think they will see many health improvements, and I want to be able to explain why, without being unkind.