Clinical Pediatrics (Phila), 2011. Apr; 50(4): 279-93.
In their review of the literature, Stevens et al conclude that the evidence indicates that a diet free of food dyes is appropriate for “children who have not responded satisfactorily to conventional treatment, or whose parents wish to pursue a dietary investigation.”
NOTE: Here we have reached the point of “try the diet if medicine doesn’t work,” which is certainly a big improvement over some earlier reviews. My recommendation, of course, is “try the medicine if diet doesn’t work.”