10.Also, environmental factors, like early or prenatal exposure to infection, and certain autoimmune disorders like celiac disease have been linked with schizophrenia.
17.Some also believe that grains lead to inflammation related health problems, but this is largely untrue except in the case of people with celiac disease.
20.Causes of vitamin D deficiency include intestinal malabsorption which can be seen with celiac disease or Crohn's disease, not enough UV light exposure, like in homebound, elderly populations.