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FNB · DrNB · PDCC

30 Bariatric and Metabolic Surgery Thesis Topics

Academic session 2026-2027  · 30 topics

This page lists 30 bariatric and metabolic surgery thesis topics for FNB, DrNB and PDCC candidates in India for the 2026-2027 academic session. Bariatric surgery research has an inherent structure: weight, body composition and metabolic parameters are measured before and after surgery at defined intervals, which makes prospective observational studies easy to design and defend.

The bariatric and metabolic surgery thesis topics below are built on those serial measurements. They cover sleeve gastrectomy and gastric bypass outcomes, metabolic comorbidity resolution, nutritional deficiency surveillance, perioperative complications, patient selection and preoperative optimisation, and the reoperation questions that arise in a maturing bariatric programme.

Click any topic to open it in the protocol generator with the title already filled in.

  1. A cross-sectional study of the preoperative metabolic and psychological profile of bariatric surgery candidatesGet protocol
  2. An observational study of the weight loss outcome at six months following laparoscopic sleeve gastrectomyGet protocol
  3. A study of the body composition change at six months after sleeve gastrectomyGet protocol
  4. An observational study of the glycaemic response following bariatric surgery in patients with type 2 diabetes mellitusGet protocol
  5. A cross-sectional study of the resolution of dyslipidaemia at six months after bariatric surgeryGet protocol
  6. An observational study of blood pressure response following sleeve gastrectomyGet protocol
  7. A study of the nutritional deficiency profile at six months following bariatric surgeryGet protocol
  8. An observational study of micronutrient levels before and after sleeve gastrectomyGet protocol
  9. A cross-sectional study of iron, vitamin B twelve and folate status following bariatric surgeryGet protocol
  10. An observational study of supplementation adherence and its determinants after bariatric surgeryGet protocol
  11. A comparative study of metabolic outcomes between sleeve gastrectomy and Roux-en-Y gastric bypassGet protocol
  12. An observational study of the perioperative complication grade and its clinical management in bariatric surgeryGet protocol
  13. A study of the conversion rate and its determinants in laparoscopic bariatric proceduresGet protocol
  14. An observational study of the leak rate and its management after sleeve gastrectomyGet protocol
  15. A cross-sectional study of the outcome of revisional bariatric surgeryGet protocol
  16. An observational study of the preoperative evaluation findings and their influence on procedure selectionGet protocol
  17. A study of the psychological profile and quality of life before bariatric surgeryGet protocol
  18. An observational study of quality of life at six months after bariatric surgery assessed by a validated instrumentGet protocol
  19. A cross-sectional study of obstructive sleep apnoea and its change following bariatric surgeryGet protocol
  20. An observational study of orthopaedic comorbidity and its functional improvement after significant weight lossGet protocol
  21. A study of the influence of preoperative weight loss on perioperative outcomes in bariatric surgeryGet protocol
  22. An observational study of the pattern of weight regain following bariatric surgeryGet protocol
  23. A cross-sectional study of patient expectations and satisfaction following bariatric surgeryGet protocol
  24. An observational study of the gastro-oesophageal reflux outcome following sleeve gastrectomyGet protocol
  25. A study of the outcome of bariatric surgery in adolescent patientsGet protocol
  26. An observational study of the influence of diabetes duration on glycaemic response to bariatric surgeryGet protocol
  27. A cross-sectional study of fertility and menstrual cycle changes following bariatric surgery in womenGet protocol
  28. An observational study of the bone mineral density change at six months following bariatric surgeryGet protocol
  29. A study of the rate of excess weight loss and its predictors at six months after gastric bypassGet protocol
  30. An observational study of the perioperative course and short-term outcome of bariatric surgery in the elderlyGet protocol

Choosing a Bariatric and Metabolic Surgery thesis topic

What outcomes are realistic in bariatric and metabolic surgery research?

Percentage excess weight loss and percentage total weight loss at six months, glycaemic and lipid parameters at six months, blood pressure response, complication rates graded on an established classification, nutritional markers at three and six months, and health-related quality of life at six months. Long-term weight regain and sustained metabolic benefit need years.

What makes Indian bariatric surgery research distinctive?

The metabolic phenotype. Indian patients undergoing bariatric surgery often have a lower body mass index than Western cohorts but a higher metabolic burden of type 2 diabetes mellitus and dyslipidaemia. Studies documenting the Indian metabolic response to bariatric surgery fill a gap in the published literature.

What sample size is realistic?

A unit performing three or more bariatric procedures a day can support fifty to a hundred cases over twelve months for a single procedure outcome study. Comparative studies between two procedures require both arms to be well represented in the unit's practice before the design is fixed.

Thesis and protocol questions

How is a thesis topic different from a thesis protocol?

The topic is the title — the question a study sets out to answer, together with the population and the design. The protocol is the full document built around it: background, review of literature, aims and objectives, inclusion and exclusion criteria, sample size calculation, methodology, statistical plan, ethics considerations, consent documents and references. A topic is agreed with a guide first; the protocol is written afterwards and submitted to the institutional ethics committee.

When does a postgraduate thesis have to be submitted?

For most Indian postgraduate programmes the protocol is submitted within the first six months of joining, and the completed thesis is submitted at least six months before the final examination. Exact deadlines are set by the university, so the departmental circular for the current session takes precedence over any general timeline.

How is sample size decided for a postgraduate thesis?

Sample size follows from the primary objective, not the other way round. A prevalence study is powered from an expected proportion and an acceptable margin of error; a comparative study is powered from the expected difference between groups, the standard deviation, alpha and desired power. The figure should then be checked against the institution's actual case load for the study period, because a statistically ideal sample that cannot be recruited in the time available is not a workable plan.

Does a thesis topic need ethics committee approval?

Yes. Every postgraduate thesis involving human participants, human data or human samples requires clearance from the institutional ethics committee before data collection begins. Approval is granted on the protocol rather than on the title, and the submission usually includes the protocol, the participant information sheet and the consent form in English and in the local language.

What makes a topic realistic for a three-year postgraduate programme?

A workable topic can be completed at a single centre, with equipment and investigations that are already available in routine practice, within roughly eighteen months of data collection. Topics that depend on external funding, specialised assays, multicentre coordination or long follow-up tend to stall. Choosing a condition the department already sees in volume matters more than choosing a novel one.

Can a thesis be published as a research paper afterwards?

Yes, and it is generally expected. A thesis is usually condensed into a paper of around three to four thousand words, restructured into the standard introduction, methods, results and discussion format, with the review of literature shortened considerably. Journals differ in their requirements, and the ethics approval number from the original thesis is normally cited in the methods section.

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