Aspartame (α-aspartyl-l-phenylalanine-o-methyl ester), an artificial sweetener, has been linked to behavioral and cognitive problems. Possible neurophysiological symptoms include learning problems, headache, seizure, migraines, irritable moods, anxiety, depression, and insomnia. The consumption of a …
Source: Neurophysiological symptoms and aspartame: What is the connection? – PubMed
see also – pubmed.ncbi.nlm.nih.gov/17684524/