The report's author, Jim Stevenson from Southampton University, said: "The results suggest that consumption of certain mixtures of artificial food colours and sodium benzoate preservative are associated with increases in hyperactive behaviour in children. . . . Many other influences are at work but this at least is one a child can avoid." Compendial status British Pharmacopoeia European Pharmacopoeia Food Chemicals Codex Japanese Pharmacopoeia United States Pharmacopeia See also Acceptable daily intake List of investigational antipsychotics Potassium benzoate References External links International Programme on Chemical Safety - Benzoic Acid and Sodium Benzoate report Safety data for sodium benzoate The Ketchup Conundrum Antiseptics Benzoates Preservatives Organic sodium salts E-number additives