• Leorides Severo Duarte-Guerra, Julia Faria Villares, Marco Aurélio Santo, Francisco Lotufo-Neto, and Yuan-Pang Wang.
• Department of Psychiatry, Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, SP, Brazil; Centro Universitário Fundação Santo André, Santo André, SP, Brazil. Electronic address: leoduarteguerra@hotmail.com.
• Clinics (Sao Paulo). 2024 Jan 1; 79: 100517100517.

ObjectiveTo evaluate the evolution of Psychiatric Disorders (PD) and weight loss at different postoperative intervals up to 9 years after Metabolic and Bariatric Surgery (MBS).MethodsThis is a nine-year longitudinal study conducted at a single university-based bariatric center in Brazil. The Generalized Estimating Equation (GEE) and multiple linear regression models were used to evaluate the proportion of lifetime PD according to TPS, and its relationship with weight. The Structured Clinical Interview for DSM-5 assessed the PD and the percentage of Excess Lost Weight (%EWL) for weight changes. The study included 142 participants who had undergone MBS, mostly women (82 %), mean age of 52 years.ResultsDepression and anxiety disorders were the most common PD. Regardless of the time elapsed since MBS, there was an increase of 32 % in lifetime mood disorders, bipolar disorders, and eating disorders. The average EWL for Time Post-Surgery (TPS) ≤ 24 months was 69 % and remained consistent until 72 months; after was 57 % and 58 % for ≤ 72 and 96 months, respectively. There was not a significant association between %EWL and PD when controlling for sex, age, and time post-surgery.ConclusionPsychiatric disorders can be associated and remain prevalent, regardless of time post-surgery; however, this does not significantly impact weight losss maintenance. It is recommended that individuals who have undergone MBS be monitored and supported over an extended period to address psychiatric comorbidities.Copyright © 2024 HCFMUSP. Published by Elsevier España, S.L.U. All rights reserved.

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