Does aspartame affect mood, behavior, or cognitive function, including memory?

No. A number of scientific studies done by experts at several well-known academic centers, including the Massachusetts Institute of Technology (MIT), the National Institute of Mental Health, Harvard Medical School, and Yale Medical School,have shown that aspartame has no effects on mood, behavior, or cognition, including memory loss.

Numerous studies have shown that aspartame consumption does not affect the behavior of children, including those diagnosed as "hyperactive" or with Attention Deficit Disorder (ADD).