Could "Red 40" dye be making your kid hyperactive? The FDA is going to find out. During a two-day meeting beginning today, the FDA will review existing data to determine whether they link dyes used in everyday foods with hyperactivity. The advisory committee will then decide if the issue merits further study, or if food labels need to be altered. To date, the FDA has found no proven link between the two, but it has said that the behavioral issue of "certain susceptible children" could be exacerbated by the dyes. The meeting is in response to a 2008 petition that sought to ban Yellow 5, Red 40, and six other dyes, reports the AP.