Years ago one of my nephews was diagnosed with ADHD. They wanted to put him on ritilin and my sister said no. Then she reserched every thing that they had on the subject. She found out that there are many foods that could affect him. A couple of things that were very bad were red food dye and preservatives. She always made meals from scratch, but began baking everything herself, canning and really watching what he ate. He was a totally different kid. A lot of people think that sugar is what makes kids hyper, and sometimes it does for a little while, but it wears off fairly fast. The food dye, preservatives, some fruit and other foods are 100 times worse and take quite a while to wear off. I'm not sure if this pertains to adult ADD, but it would be worth looking into. I know that if I eat certain foods (corned beef, aged cheese, soy sauce) or msg it will cause a migraine.