While I agree that a lot of the symptoms that relate to ADHD can be attributed to poor nutrition or nutritional deficiencies, I do not believe this is the direct cause of ADHD. That was a great site and very interesting to read! I would like to see a study that takes 1000 children and 1000 adults for example and then see what the outcome would be. A larger study is more indicative of truer results.
I consider myself to be one of the crunchiest granola type people around. I am very holistic and very much into alternative and nutritional therapies. However, since we already eat a very healthy diet that is 95% free of additives, sugar, preservatives etc and we also control our carbs, and take a patented supplement that is proven to be absorbed, I still didn't notice that much difference. I do notice more of a difference in my two year old however, but just not for myself which is unfortunate. So ya know when I am on medications it is truly because for me that was a last resort!
But I do think anyone diagnosed with ADHD should also take a good long look at their diet and exercise habits, since modifying the diet and increasing daily activities can certainly help.
Just my two cents!