. . "Wdnesday April 22, 2009 (foodconsumer.org) -- A symposium of nineteen professionals, including toxicologists and pediatricians, have sent a letter to Congress asking them to ban certain synthetic food dyes, as they have been tied to behavioral problems, particularly ADHD, in young children.The group expresses dismay over what they believe is a lack of concern for the matter, even though pediatric" . .