just do a google search for "excitotoxins" or "russell blaylock" - the first term describes the metabolic byproducts as they affect the nervous system by overstimulating it - this is the case with MSG, aspartame (nutrasweet), and hydrolyzed vegetable protein. The second term - "blaylock" is the name of the neurosurgeon who is trying to shake up the food industry. He published a book that makes a very convincing argument and is quite well documented and researched.
check it
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