Research by the World Health Organization had suggested that schizophrenia is relatively more prevalent developing societies. However, a new study from Current Anthropology challenges this assumption, comparing biological and cultural indicators of schizophrenia in urban, Western societies with study data from the island of Palau, which has one of the highest rates of schizophrenia diagnosis in the world today.
The regional differences in epidemology has been traditionally attributed to cultural and genetic factors. However, differences in diagnosis and in recognition and reporting of symptoms could also be a contributing factor for the imbalances in distribution found.
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