None of the twin studies have found a concordance rate that even approaches 100 percent. This evidence suggests that the development of schizophrenic disorders is not entirely explained by genetics
- Identical twins were studied for relation of schizophrenia to genetics. There is a less than 0.5 association between identical twins with identical genomes and schizophrenia. As a result, it can be concluded that schizophrenia is not solely a genetic disorder.
- Although schizophrenia frequently runs in families, no one gene is known to be the cause.
- It's more likely that particular gene combinations increase a person's susceptibility to the illness. Nevertheless, schizophrenia is not a guarantee if you have these genes.
- The possibility that a person may acquire the illness is influenced by environmental risk factors such as pregnancy and birth problems, childhood trauma, migration, social isolation, urbanization, and substance misuse, operating alone and in combination throughout time at various levels.
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