Journal of Pediatrics 1979 Jun;94(6):944-5

Trace mineral levels in hyperactive children responding to the Feingold diet

Brenner A.

"The Feingold hypothesis associating the hyperkinetic syndrome with ingestion of common food additives, artificial colors and flavors, and salicylate-containing foods has evoked considerable controversy. Since many children ingest these ubiquitous additives, and no differences in dietary habits have been noted between hyperkinetic and nonhyperkinetic children, it is possible that a biochemical difference may be present in children who appear to be affected by the additives." 20 children who responded to the Feingold diet, and 14 who did not were tested for copper and zinc levels in their blood. There was a significantly higher level of copper in the children who did respond to the diet. Possible reasons are discussed.

[not included on MedLine]