Is it possible to suffer brain trauma from overdosing MSG?
Only if you consider a seizures trama. Then again I have yet to see a study conclusively show it.
what about brain damage?
Yes, but you would need to eat a LOT of MSG, and your seizures would need to be severe. I'm not aware of any case of this happening outside of an industrial setting. If you're asking, "does MSG cause brain damage?", there is nothing to say it does, and much to indicate otherwise.
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