http://www.nutritionandmetabolism.com/content/6/1/10

Abstract (provisional)
We report the unexpected resolution of longstanding schizophrenic symptoms
after starting a low-carbohydrate ketogenic diet. After a review of the
literature, possible reasons for this include the metabolic consequences
from the elimination of gluten from the diet, and the modulation of the
disease of schizophrenia at the cellular level.