Impact of Obesity on Survival Rates and Chemotherapy Efficacy in Stage IV Colorectal Cancer: A Retrospective Analysis - Takeaways - MDSpire

Impact of Obesity on Survival Rates and Chemotherapy Efficacy in Stage IV Colorectal Cancer: A Retrospective Analysis

  • By

  • Catherine G. Tran

  • Carine Dornbush

  • Braden S. Jensen

  • Sarah L. Mott

  • Elise E. H. Fannon

  • Austin C. Stark

  • Meghan E. Mali

  • Daniel J. Berg

  • Erin E. Talbert

  • Carlos H. F. Chan

  • February 5, 2026

  • 0 min

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  • 1

    Obesity is associated with a 1.3 times increased risk of developing stage IV colorectal cancer (CRC) and worsened prognosis in certain patient subgroups.

  • 2

    The study analyzed 320 patients with stage IV CRC, revealing median overall survival of 20.9 months, with no significant survival differences across BMI groups.

  • 3

    Obese patients had a higher likelihood of N2 disease compared to normal weight and overweight patients, indicating more advanced disease at diagnosis.

  • 4

    After adjusting for confounding factors, normal weight and overweight patients had increased risks of death compared to obese patients.

  • 5

    The study challenges the assumption that higher BMI negatively impacts survival in CRC, suggesting a potential 'obesity paradox' in cancer outcomes.

Original Source(s)

Impact of Obesity on Survival Rates and Chemotherapy Efficacy in Stage IV Colorectal Cancer: A Retrospective Analysis

  • by Catherine G. Tran, Carine Dornbush, Braden S. Jensen, Sarah L. Mott, Elise E. H. Fannon, Austin C. Stark, Meghan E. Mali, Daniel J. Berg, Erin E. Talbert, Carlos H. F. Chan

  • February 5, 2026

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