I was reading this study: https://pubmed.ncbi.nlm.nih.gov/25786106/ And it found no difference in patient symptoms between aspartame and placebo, thus giving the impression that people with such a sensitivity are imagining things / have psychological issues. Quite disappointing to me. Considering that I have very consistent symptoms every time I ingest something that contains aspartame in it, which has happened to me dozens of times, sometimes without me knowing I was ingesting aspartame, only finding out after the fact (thus making it unlikely that it is a psychological phenomenon). Surely there must be some good studies proving that aspartame, MSG, etc. affect certain individuals negatively? Or maybe it's the same situation like CFS, i.e. scientists / doctors thinking its a psychogenic thing and not bothering to research it.