Epigenetics, schizophrenia and identical twins discordant for schizophrenia

Studies on identical twins where one twin has schizophrenia and the other twin does not show that schizophrenia is due to epigenetic changes. Where one identical twin has schizophrenia the probability of the other identical twin having schizophrenia is 40%. DNA and/or histones of the ill twin must be hypermethylated as the illness is not in the genes as one twin with the very same genes is not ill. That genes are all determinative is a sort of religious belief rather than a scientific viewpoint.

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