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Related Experiment Videos

Body Mass Index, Weight Loss, and Cause-Specific Mortality in Rheumatoid Arthritis.

Bryant R England1, Joshua F Baker2, Harlan Sayles1

  • 1VA Nebraska-Western Iowa Healthcare System, and University of Nebraska Medical Center, Omaha.

Arthritis Care & Research
|April 21, 2017
PubMed
Summary

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Weight loss and body mass index (BMI) predict mortality in rheumatoid arthritis (RA). Significant weight loss increases cardiovascular and cancer death risks, while underweight BMI raises respiratory mortality risk.

Area of Science:

  • Rheumatology
  • Epidemiology
  • Public Health

Background:

  • Rheumatoid arthritis (RA) is a chronic inflammatory disease associated with increased mortality.
  • Understanding the impact of body mass index (BMI) and weight changes on mortality in RA patients is crucial for risk stratification and management.

Purpose of the Study:

  • To investigate the associations between body mass index (BMI) and weight loss with cause-specific mortality in a cohort of US veterans with rheumatoid arthritis (RA).

Main Methods:

  • A cohort of US veterans with RA was followed for mortality outcomes.
  • Body mass index (BMI) was categorized, and weight loss was assessed using annualized rate and cumulative percentage.
  • Multivariable competing-risks regression models were used to analyze time-varying associations with cause-specific mortality.

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Main Results:

  • Significant weight loss was associated with increased cardiovascular and cancer mortality risks.
  • Overweight BMI showed a protective effect against cardiovascular mortality.
  • Underweight BMI was linked to a significantly higher risk of respiratory mortality.

Conclusions:

  • Both BMI and weight loss are significant predictors of cause-specific mortality in individuals with RA.
  • Weight loss is a strong predictor for cardiovascular and cancer mortality.
  • Underweight BMI is a notable predictor for respiratory mortality in RA patients.