Scientific Evidence

         Finding scientific evidence to support the candida diet is tricky because it is hard to tell how much of the results of being on the diet are accredited to the reduction of candida in the diet or if it is simply the result of eating healthier. However, some studies have been done by British researchers to support the connection between ADHD and diet. In the Yeast Connection Handbook the results of an American study conducted in 1994 are discussed: "Nineteen of 26 children with ADHD (73%) responded favorably to an elimination diet (P<.001)"(see bibliography located at end of "Chemical Make-up").
      The simple scientific evidence is the fact that yeast has a negative effect on the body, and that cutting down on high glycemic foods will diminish these problems. It is well known that common yeast feeds on sugar and produces carbon dioxide/digestive byproducts as a side effect, so if there is yeast in the bloodstream, the logical way to kill it off would be to cut off its source of nutrients. This can be done by  lowering the blood sugar level as much as possible (achieved by taking supplements such as EFAs).
       However, the decrease of yeast in the body is not directly proven to be attributed to the lack of sugar, there have been accounts of the diet working and not working(however, those reporting an improvement in health outweigh those who don't); The simplest answer to the question of scientific evidence would be that the candida diet poses a logical solution to a simple problem. The diet must be followed strictly and over a long period of time, and therefore poses a higher rate of error.