I initially tested my son (14 year old) to help with his acne problem that got out of control. It turned out he is gluten, dairy, egg (among other things) intolerant. After he went on the diet recommended by ImmunoHealth, not only his acne cleared up, his behavior has changed. He is no longer hyperactive. I never knew that his hyperactivity was food related. I just learned to live with it, hoping he will overgrow it eventually. Now, I don't need to live with it. My son is perfectly well and I give the credit for his recovery to ImmunoHealth program.