Here are some related food coloring and food dye articles:
Scientists Warn: Food Colors Damage Kids
A recent study reported in the journal Prescrire International found that artificial food dyes are linked to an increased incidence of hyperactivity in children. Scientists studied 297 children who were representative of the general population to conclude that food colors increase hyperactivity in children, not just children who are sensitive to them.
... In another study published in the Journal of Pediatrics, the dye tartrazine was linked to behavioural disturbances in normal children. Still more research from doctors at the University of Southampton in the United Kingdom found that food dyes have a significant impact on the behaviour of normal children and boost the levels of hyperactivity. These doctors also recommended that these additives be removed from children’s diets.
Read more: http://www.care2.com/greenliving/scientists-warn-food-colors-damage-kids.html
Artificial Food Coloring Dangers
Artificial food coloring ingredients (food dye) contain plenty of chemicals. Many are derived from highly toxic sources and can cause many different diseases, disorders, and mutations in humans. Although it seems unlikely that a trivial amount of food coloring in a piece of a candy you eat (like liquorice) would have any harmful effect on you, you would be wrong, because it does.