[skadamou]

TIL glutamate is one of four amino acids that also functions as a neurotransmitter. Obviously, this does not refute any of the science disproving "MSG sensitivity" but I still find it interesting. Further, I wonder if there are people out there that claim sensitivity to aspartate or serine given that they too are both neurotransmitters and amino acids.

https://en.wikipedia.org/wiki/Neurotransmitter

[tptacek]

From what I've read, no level of glutamate intake in humans allows it to cross the blood-brain barrier, or, for that matter, even substantially increase the serum glutamate level.