Jell-O, Hawaiian Punch, Pop-Tarts, Skittles, and other brightly colored foods designed to appeal to children aren't exactly health food. But do they make kids hyperactive?

Doctors and consumer advocates have long wondered whether hyperactivity might be tied to certain dyes and additives used in processed foods, but in decades of research no studies have been able to conclusively prove — or disprove — such a link.

Read the complete CNN story, “FDA weighs food dye, hyperactivity link.”