About a year ago I minimized my wheat and processed sugar intake. I recently stopped the vitamins I'm taking because of the expense and insurance company difficulties. They cover the vitamins, similar to drugs. So, the point is that the brain fog has not returned so much and in that respect my diet change seems to be helping. I try to get 7-9 servings of vegetables and fruit each day and it has made big difference. I've lost over 20 pounds, I feel much better and I'm sleeping better.