According to Pelsser, 64 percent of children diagnosed with ADHD are actually experiencing a hypersensitivity to food. Researchers determined that by starting kids on a very elaborate diet, then restricting it over a few weeks' time.
My gluten-intolerant gut is intrigued.
Although I question the methodology of a "double-blind" study whose treatment is diet, where one group is on a severely restricted diet and the other can eat more or less whatever they want (although, yes, they were counseled on healthy eating; still not the same thing as saying "Here are 8 things you can eat for the next 5 weeks"). Because I think the double-blindedness is shot to hell on day 1, when the group that can only eat 8 things figures out they're probably the treatment group.
The study group was very small, too, so I take those results with a grain of salt. Assuming salt doesn't cause ADD.