A.L.
Oh yes there are differences. My older daughter hardly reacts at all to sugar when she has it which is not often, but my younger daughter will literally bounce off the walls. She is high energy without sugar, but when you do give her some look out. I mean it she has been so hyper she has run into walls because she is just out of control.
My niece has some really bad behavior reactions to Red Dye #40. She is extreme when she has this stuff.