The GI T-lymphocyte theory of schizophrenia: some new observations.

Schizophrenic patients have low concentrations of PGE-1, n-6 fatty acids, vitamin C and zinc, elevated brain levels of dopamine and high plasma levels of interleukin-2 receptors (IL-2R). IL-2R plasma titers can be raised in celiac patients by administering wheat. These findings are both consistent with and supportive of the GI T-lymphocyte theory of schizophrenia.