Obesity

Real‐World Weight Loss Is Associated With a Reduction in Cancer Risk

Obesity (Silver Spring)Published Retrospective case-control study

Authors' conclusion

Real-world weight loss was associated with a decreased risk of obesity-related and other cancers.

Study context

Population
Adults with BMI ≥ 30 from an integrated US health system's electronic health records (2000–2022)
Participants
143,630 adults
Comparison
BMI change and incident cancer
  • Casesn = 7,703
  • Controlsn = 135,927reference
Outcome
Risk of diagnosis of obesity-related cancers by BMI change
Follow-up
3-, 5-, and 10-year intervals
Methodological detailsmatched controls, electronic health records, integrated US health system
  • Matched controls
  • Electronic health records
  • Integrated US health system

Main finding

As reported in the abstract

Obesity-related cancer risk per 1% BMI reduction
Per 1% BMI reductionOdds ratio (95% CI)P value
3 years
0.990(0.984–0.996)
P < 0.001
5 years
0.989(0.984–0.995)
P < 0.001
10 years
0.992(0.984–1.000)
P = 0.057

Per 1% BMI reduction, as printed

Observational data: associations, not effects.

Further findings

Other cancer types per 1% BMI reduction · all intervals

Similar associations for other cancer types across all intervals
OR < 1; p < 0.001

Original publication

Real‐World Weight Loss Is Associated With a Reduction in Cancer Risk. Obesity (Silver Spring). Published 10 March 2026. doi:10.1002/oby.70163

Composed by AI from the published abstract and checked against it. How Briefs are made →

Get them every week

New studies on this topic in My Week and in your Monday e-mail.

We e-mail you a sign-in link and a code. No password, no spam.