"Although there is no clear indication that artificial food dyes cause hyperactivity or other behavioral problems in children, enough uncertainty exists to justify more research, an advisory panel told the Food and Drug Administration on Thursday.

"The panel of medical and environmental experts narrowly voted against recommending that more information about dyes be added to food labels. But panelists acknowledged the chemicals can cause problems for some children, including those who already have hyperactivity disorders.

"The FDA had asked the panel whether existing research supported the agency's conclusion that there was no proof food coloring causes hyperactivity among children in the general population."

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