The argument for MSG is that it's "naturally occurring in food anyway" and that it is a substitute for worse things - which sounds like the same argument for as

The argument for MSG is that it's "naturally occurring in food anyway" and that it is a substitute for worse things - which sounds like the same argument for aspartame. The bottom line is you don't know for sure and it's developed under commercial incentives. It's probably ok carries just as much weight as you probably don't need it.