M. Kirby, PhD
The Center for Science in the Public Interest (CSPI) a non-profit research organization in the US published a thorough review of articles published over the last 25 years on the subject of ADHD and food additives. The most recent, (and comprehensive) study was done by the joint team of Rowe and Rowe in Australia, 1999. My own son is hyperactive and suffered from food additives before I understood the danger to him. Good Luck.