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Open research questions in Bariatric Surgery and Outcomes

177 unresolved questions extracted from the limitations and future-work sections of 598 Bariatric Surgery and Outcomes papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • Further studies are needed to understand the relationship between preoperative MH conditions and postoperative outcomes, - Long-term follow-up is necessary to assess the sustainability of weight-loss and metabolic benefits

    Baseline Mental Health Status and Early Psychiatric Outcomes after Metabolic-Bariatric Surgery: A Retrospective Cohort Study · 2026 · DOI

  • Hepatic trauma and biochemical liver injury associated with traditional retraction techniques. Technical difficulties and prolonged operative time due to inadequate retraction. The need for additional port placement or conversion to open surgery due to inadequate retraction.

    Elastic Intracorporeal Retraction in Laparoscopic Bariatric Surgery: Performance, Safety, and Multi-Organ Applications · 2026 · DOI

  • Comparative trials to evaluate the EICR against traditional retraction techniques, - studies to assess the long-term safety and efficacy of the EICR, - investigations into the cost-effectiveness of the EICR

    Elastic Intracorporeal Retraction in Laparoscopic Bariatric Surgery: Performance, Safety, and Multi-Organ Applications · 2026 · DOI

  • The study was limited by its single-center retrospective design. The study was subject to the inherent limitations of retrospective research. The magnitude of postoperative changes was not associated with the extent of weight loss or BMI reduction.

    Radiographic Changes in Patellar Height Following Rapid Weight Loss After Sleeve Gastrectomy: A Retrospective Observational Study · 2026 · DOI

  • The effects of rapid weight loss on radiographic patellar height are unknown. Prior studies have not investigated the association between postoperative changes and weight loss or BMI reduction.

    Radiographic Changes in Patellar Height Following Rapid Weight Loss After Sleeve Gastrectomy: A Retrospective Observational Study · 2026 · DOI

  • The etiology of depression is complex, and growing evidence suggests body shape may play a role. There is a need to explore the relationship between ABSI and depressive symptoms.

    The association between a body shape index and depressive symptoms: a cross-sectional study using NHANES data (2011–2018) · 2025 · DOI

  • There is limited literature on the anaesthetic practice in bariatric surgery in South Africa.

    Retrospective audit of anaesthesia practices in a new Bariatric unit in a Johannesburg academic hospital · 2026 · DOI

  • Abstract New obesity medications have demonstrated efficacy in trials, but their real-world deployment is partly limited by the absence of approaches that identify individuals for treatment based on risks for obesity-related complications.

    Data-driven prioritization of high-risk individuals for weight loss interventions · 2026 · DOI

  • Although these agents effectively induce preoperative weight loss, their influence on postoperative outcomes following bariatric surgery remains uncertain.

    The impact of preoperative therapy with GLP-1 receptor agonists on weight loss and metabolic effects after bariatric surgeries – single-center preliminary study · 2026 · DOI

  • However, the volume–outcome relationship in bariatric surgery remains incompletely defined.

    The Impact of Hospital Volume on Bariatric Surgery Safety: A Population-Based Study using Data from the National Bariatric Surgery Registry of the United Kingdom · 2026 · DOI

  • Importance: The association of bariatric surgery and newer glucagon-like peptide-1 receptor agonists (GLP-1RAs; semaglutide and tirzepatide) with body composition still lack evidence from clinical settings.

    Body Composition Changes After Bariatric Surgery or Treatment With GLP-1 Receptor Agonists · 2026 · DOI

  • Robotic adoption in metabolic and bariatric surgery has increased, but its procedure-specific short-term outcomes remain uncertain.

    Procedure-specific outcomes of robotic versus laparoscopic Roux-en-Y gastric bypass and biliopancreatic diversion with duodenal switch across a decade of MBSAQIP adoption · 2026 · DOI

  • However, no studies have investigated the association between sarcopenia and esophageal stenosis after endoscopic submucosal dissection (ESD).

    Correlation between sarcopenia and esophageal stenosis following endoscopic submucosal dissection and construction of a postoperative stenosis risk model · 2026 · DOI

  • It remains unclear whether reengaging in lifestyle weight loss interventions is effective for the long-term.

    How effective is rejoining a long-term weight loss program? The 5- and 10-year MRI-assessed Follow Interventions Trial (FIT) project · 2026 · DOI

  • However, the lack of association with heart disease, likely due to confounding factors, warrants further investigation to clarify this relationship.

    Dynapenic abdominal obesity and the risks of heart disease and all-cause mortality: a 7-year longitudinal study among middle-aged and older Chinese adults · 2025 · DOI

  • Future research should explore the causal mechanisms underlying this association and investigate the biological pathways involved, to inform more effective strategies for depression prevention and intervention.

    The association between a body shape index and depressive symptoms: a cross-sectional study using NHANES data (2011–2018) · 2025 · DOI

  • Background: The relationship between the triglyceride-glucose (TyG) index, its combination with obesity indicators, and depression remains understudied in the American population.

    Association between triglyceride-glucose index and its combination with obesity indicators and depression: findings from NHANES 2005–2020 · 2025 · DOI

  • Background: The long-term follow-up studies investigating the risk of anemia and iron deficiency following bariatric procedures are scarce.

    Iron Deficiency Anemia Following Bariatric Surgery: A 10-Year Prospective Observational Study · 2025 · DOI

  • The new framework effectively stratified individuals at high risk of organ dysfunction and long-term complications while introducing anthropometric-only obesity and preclinical obesity as distinct entities warranting further study.

    Implications of a New Obesity Definition Among the All of Us Cohort · 2025 · DOI

  • The role of the robot in patients with obesity class V (BMI ≥ 60 kg/m2) surgery has not been adequately evaluated.

    Robotic vs. laparoscopic Roux-en-Y gastric bypass in patients with BMI ≥ 60 kg/m2 - results of over 230,000 patients using the MBSAQIP database · 2025 · DOI

  • The robotic approach to metabolic bariatric surgery (MBS) is becoming more popular despite limited data supporting beneficial outcomes.

    Robotic bariatric surgery in Australia: early outcomes from a national clinical quality registry with propensity score matched analysis · 2025 · DOI

  • ARTICLE HIGHLIGHTS Roux-en-Y gastric bypass improves glycemic control in patients with type 2 diabetes, but the impact of the improved glycemic control on β-cell sensitivity to glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic peptide (GIP) is sparsely described.

    β-Cell Function and Sensitivity to Incretins Before and After Roux-en-Y Gastric Bypass in Individuals With Type 2 Diabetes · 2025 · DOI

  • Roux-en-Y gastric bypass (RYGB) improves glucose tolerance in patients with type 2 diabetes, but the effect on β-cell sensitivity to glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic peptide (GIP) remains unclear.

    β-Cell Function and Sensitivity to Incretins Before and After Roux-en-Y Gastric Bypass in Individuals With Type 2 Diabetes · 2025 · DOI

  • HF risk reduction may vary by patient's demographics, weight loss, and disease history, which warrants further research.

    Reduced Risk of Cardiovascular Diseases After Bariatric Surgery Based on the New Predicting Risk of Cardiovascular Disease EVENTs Equations · 2025 · DOI

  • Abstract Background Obesity has been related to depression and adhering healthy lifestyle was beneficial to lower the risk of depression; however, little is known about the relationship between body composition and fat distribution with depression risk and the influence of body composition and fat distribution on the association of lifestyle and depression.

    Body composition, lifestyle, and depression: a prospective study in the UK biobank · 2024 · DOI

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177 open questions have been extracted from the limitations and future-work passages of 598 Bariatric Surgery and Outcomes papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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