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Adiposity in dialysis: good or bad?

Allon N Friedman1

  • 1Division of Nephrology, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA. allfried@ipui.edu

Seminars in Dialysis
|March 23, 2006
PubMed
Summary

In dialysis patients, excess adiposity may be linked to lower mortality risk, unlike the general population. However, causality is unproven, and weight management decisions require individualized clinical judgment.

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Area of Science:

  • Nephrology
  • Clinical Medicine
  • Public Health

Background:

  • Obesity is a significant health concern in the general population, often linked to increased mortality.
  • Dialysis patients exhibit high rates of obesity and elevated mortality, making the role of adiposity crucial.
  • Existing research suggests a paradoxical association between adiposity and mortality in dialysis patients.

Purpose of the Study:

  • To examine the relationship between adiposity and mortality risk in the dialysis population.
  • To critically evaluate the existing literature on obesity and survival in hemodialysis patients.
  • To inform clinical practice regarding weight management in dialysis patients.

Main Methods:

  • Review and synthesis of existing epidemiological studies and clinical data.
  • Analysis of observational data concerning adiposity and mortality in dialysis cohorts.
  • Consideration of methodological limitations including confounding and survival bias.

Main Results:

  • In contrast to the general population, adiposity appears to have a neutral or protective association with mortality in dialysis patients.
  • Despite observational data, causality between excess adiposity and improved survival cannot be established.
  • There is no evidence that intentional weight loss negatively impacts outcomes in obese dialysis patients.

Conclusions:

  • It is premature to consider excess adiposity beneficial or intentional weight loss dangerous in dialysis patients.
  • Individualized clinical decisions regarding optimal weight are necessary, with close patient monitoring.
  • Future research should prioritize interventional trials, investigation of adipose tissue products, and quality of life assessments.

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