It's been researched and tested, it has been debated over and over. Do food colorings, especially red dye and yellow dye cause hyperactivity? Are they one of the causes of ADHD? Most of the research has shown little to back up the claim that these dyes cause ADHD. But this week the FDA will be revisiting the argument and discussing whether artificial dyes should be banned or carry a warning about possible behavioral problems.

I can tell you, from experience, that red dye can, in some...