In this article, the results of a bibliographic research concerning the interactions between bariatric surgery and psychopathologies are presented. In the preoperative phase, although not scientifically demonstrated, uncontrolled psychopathologies as well as the abuse of illicit substances are often considered as exclusion criteria for the intervention. From the psychological point of view, neither the existence of a "typical" profile, nor the presence of predictive factors have been demonstrated. However some "attitudes" or "personality traits" could influence the issue of the intervention. In the postoperative phase, the pre-existing psychopathologies transiently improve. On the other hand, alcohol and illicit substances abuse as well as suicide are increased.
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