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August 26, 2025JAMA Network OpenOpen Access

Body Mass Index and Postsurgical Outcomes in Older Adults

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Authors

CCCecilia CanalesMAMichelle E. AndersonDEDavid Elashoff

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Overview

Cohort study linking higher BMI to reduced mortality rates in older adults undergoing elective surgery, suggesting reevaluation of weight loss norms.

Key Points

  • Being overweight is linked to a significantly lower rate of 30-day all-cause mortality in older adults, emphasizing a potential shift in preoperative advice.
  • Patients with an overweight BMI had a mortality rate of only 0.8%, compared to 18.8% in those with normal BMI, highlighting this stark contrast in outcomes.
  • Conducted as a cohort study, assessments included various postoperative outcomes like mortality, delirium, and complications over the first year post-surgery.
  • The findings may indicate that traditional weight loss strategies should be reconsidered for older adults facing surgery, given their unique physiological changes.

Cite This Study

Canales et al. (2025) studied this question.

synapsesocial.com/papers/68af63d7ad7bf08b1eae3dc3https://doi.org/10.1001/jamanetworkopen.2025.28875
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