Multimorbidity and the Etiology of Schizophrenia.

A global study of multimorbidity in schizophrenia, especially of the association with physical conditions, might offer much needed etiological insights. Our review suggests that life-style factors and medication related to schizophrenia are only part of the explanation of the increase in risk for cardiovascular, metabolic, pulmonary disorders, and some cancers. Positive associations with autoimmune disorders (with the exception of rheumatoid arthritis) and epilepsy are promising avenues of research but to date have not been fully exploited. The same holds for the negative comorbidity seen for rheumatoid arthritis and some cancers (e.g., prostate). As a whole, our review suggests that most of the explored conditions have a different prevalence in schizophrenia than in the general population. Several hypotheses emerged from this review such as the role of immune and genetic factors, of sex hormones, and of more general variability factors.

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© 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.