Disease Severity and Staging of Obesity: a Rational Approach to Patient Selection

  • M. B. Whyte
  • S. Velusamy
  • S. J. B. AylwinEmail author
Lipid and Metabolic Effects of Gastrointestinal Surgery (F Rubino, Section Editor)
Part of the following topical collections:
  1. Topical Collection on Lipid and Metabolic Effects of Gastrointestinal Surgery


The increasing prevalence of obesity places ever-increasing cost demands on healthcare systems. One million individuals are eligible for bariatric surgery in the UK, and yet less than 6000 bariatric procedures are performed annually. Bariatric surgery reverses or improves almost all the medical and psychosocial co-morbidities associated with obesity. Although the BMI is a simple method to estimate adiposity at a population level, it is relatively inaccurate within an individual and provides little-to-no indication of overall health status or disease severity. Staging systems overcome the inherent limitations of BMI and allow highly informed decision-making for an individual. At a societal level, this helps to identify those most likely to gain and maximise economic benefit. This review summarises the co-morbidities associated with obesity and the evidence for their improvement following surgery. The rationale for new staging criteria and appropriate patient selection are discussed.


Obesity Bariatric Surgery Staging 


Compliance with Ethics Guidelines

Conflict of Interest

Martin B. Whyte, S. Velusamy and Simon J. Aylwin declare that they have no conflict of interest.

Human and Animal Rights and Informed Consent

This article does not contain any studies with human or animal subjects performed by any of the authors.


Papers of particular interest, published recently, have been highlighted as: • Of importance •• Of major importance

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© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.Department of NutritionUniversity of SurreyGuildfordUK
  2. 2.Department of EndocrinologyKing’s College Hospital NHS Foundation TrustLondonUK

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