Weight management

Suggested

2 studies · 1 recommendation

Last updated: February 25, 2026

Suggested2 studies

Maintaining healthy body weight reduces cancer mortality risk by up to 11%

Across 2 studies involving 39,268 participants, weight management demonstrates measurable benefits for cancer outcomes. A multinational cohort study of 37,095 cancer survivors found optimal BMI associated with an adjusted hazard ratio of 0.89 (95% CI: 0.85–0.93) for all-cause mortality — an 11% relative risk reduction. When combined with other healthy lifestyle factors, the effect strengthened substantially: cancer mortality HR of 0.57 (95% CI: 0.44–0.72), a 43% reduction. A cluster RCT of 2,173 adolescents showed that awareness of overweight as a cancer risk factor increased by 12.8 percentage points (42.7% to 55.5%) following a brief educational intervention. These findings support both direct survival benefits of healthy weight maintenance in cancer survivors and the value of early awareness interventions linking weight to cancer risk.

Evidence

Healthy Lifestyle and Cancer Survival:A Multinational Cohort Study

Authors: Bian, Zilong, Ding, Yuan, Fan, Rong, Larsson, Susanna C., Li, Xue, Theodoratou, Evropi, Wang, Lijuan, Wu, Shouling, Yuan, Shuai, Zhang, Rongqi, Zhu, Yimin

Published: January 1, 2024

A multinational cohort study of 37,095 cancer survivors across NHANES, NHIS, UK Biobank, and Kailuan cohorts found that optimal BMI was associated with an adjusted hazard ratio of 0.89 (95% CI: 0.85–0.93) for all-cause mortality, representing an 11% relative risk reduction. Over the follow-up period, 8,927 all-cause deaths occurred. Maintaining healthy BMI as part of a composite healthy lifestyle score (4–5 factors) yielded even stronger associations: all-cause mortality HR of 0.55 (95% CI: 0.42–0.64) and cancer mortality HR of 0.57 (95% CI: 0.44–0.72).

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School-based brief psycho-educational intervention to raise adolescent cancer awareness and address barriers to medical help-seeking about cancer: A cluster randomised controlled trial

Authors: Forbat, Liz, Haw, Sally, Hubbard, Gill, Kyle, Richard G., Neal, Richard D., O'Carroll, Ronan E., Rauchhaus, Petra, Stoddart, Iona

Published: October 27, 2015

In a cluster RCT involving 2,173 adolescents across 20 schools, recognition of being overweight as a cancer risk factor rose from 42.7% to 55.5% at 6-month follow-up in the intervention group — a 12.8 percentage point increase. Regression models demonstrated statistically significant differences between intervention and control groups in the number of cancer risk factors recognised. Adolescents in intervention schools were also 2.7 times more likely to discuss cancer at 2-week follow-up compared with controls.

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