[dragonwriter]

> So you do accept that some studies have demonstrated MSG sensitivity

No, some studies have shown that high doses or unusual methods of introduction (e.g., IV) of MSG can cause symptoms; no properly controlled studies have shown sensitivity (i.e., a trait in which people are prone to symptoms at lower thresholds that are typical, such that they might experience symptoms with doses that might actual be encountered outside of deliberate mass ingestion.)

> Do you find it utterly impossible that some people could be sensitive at one-sixth the dose that "most people" become sensitive at?

“It’s not utterly impossible” is not the same thing as “clinical studies have provided evidence for it”.