Here are the key points to the diet:
Cut all junk food esp. transfat stuff (chips, stuff from a box), refined sugars (soda, processed juices, candy), preservatives, MSG, artificial coloring (in fruit drinks, jello, etc). Cut DAIRY - no milk; it's very bad. Get back to whole foods, homemade and as much as your can, organic. If your kid reacts to phenols, then avoid berries, apples, peppers, tomatoes.
1) Essential fatty acid supplementation - flaxseed oil and in evening, fish oil (make sure it's purified)
2) Magnesium
3) B6
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My son was diagnosed ADD and we are doing this diet; it is working.