This is an retrospective and prospective (ambispective) study with data collection from volunteer patients who passed an MMPI-2-RF (Minnesota Multiphasic Personality Inventory-2-Restructured form) questionnaire in the preoperative phase of a bariatric surgery project.

The evolution of their BMI will be correlated to psychological dimensions collected in patient questionnaires, before and after bariatric surgery.

The presence of possible risk factors such as depression, anxiety, eating disorders, quality of life, satisfaction and the perception of body, could make it possible to establish adapted therapies before surgery, in order to attenuate or eliminate the presence of these factors, and improve BMI evolution and bariatric surgery success.

A first phase of data collection will concern data from the MMPI-2-RF questionnaire as well as clinical data, collected during preoperative consultations.

For the second phase, post-operative data will be collected, during a routine follow-up consultation in the nutrition Department, where specific psychological questionnaires are taken by patients.

Inclusion Criteria:

• Having been treated in the Nutrition department for severe obesity and considered for bariatric surgery because having met the criteria validating bariatric surgery:
• Having passed the MMPI-2-RF questionnaire between January 1, 2014 and December 31, 2023 in the preoperative phase, as part of psychological follow-up
• Having benefited from bariatric surgery or patients who have abandoned the surgery plan for a reason other than a medical contraindication.
• Informed of the study, having agreed to participate and not having opposed the use of their data

Exclusion Criteria:

• Subjects who generated an invalid MMPI-2-RF questionnaire, according to the test validity criteria (verified by the principal investigator)
• Subjects who expressly objected to the use of their data for this study
• Subjects who have not undergone bariatric surgery due to a medical contraindication.
• Patient unable to understand the study or complete the post-operative phase visit
• Persons under guardianship or curators or under legal protection

Patients with severe obesity : BMI > 40 kg/m2 or > 35 kg/m2 associated with at least one comorbidity likely to be improved after surgery.

• Failure of well-conducted medical, nutritional, dietetic and psychotherapeutic monitoring for 6-12 months
• Lack of sufficient weight loss or failure to maintain weight loss