Research
Hormonal
Moderate-intensity aerobic exercise (approx. 120 min/week) and resistance training significantly reduce fasting insulin levels in breast cancer survivors, independent of body weight loss.
Engage in 120 minutes of moderate aerobic exercise (like brisk walking) per week or twice-weekly resistance training. This helps lower insulin levels, a key factor in breast cancer prognosis, even if you do not lose weight.
GoodSupportsHIGH confidence
Both studies observed reductions in insulin without concomitant decreases in body weight or fat.
Why this rating
Supported by randomized controlled trials on surrogate markers (insulin), though not directly on survival outcomes.
Source
Physical activity interventions for cancer survivors: Figure 1
Melinda L. Irwin · British Journal of Sports Medicine · 2008
DOI 10.1136/bjsm.2008.053843
narrative_reviewCited 179×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Physician recommendation and referral to certified cancer exercise trainers significantly increases physical activity levels in breast cancer survivors compared to usual care.Good
- Post-diagnosis moderate-intensity recreational physical activity (approx. 3 hours/week) is associated with a 24-67% reduction in total mortality and 50-53% reduction in breast cancer-specific mortality in women with breast cancer.Moderate
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