Research
Energy balance
Weight loss, particularly through bariatric surgery or intentional lifestyle changes, significantly reduces the incidence of obesity-related cancers.
If you are obese, achieving and maintaining significant weight loss (e.g., >10kg) can cut your risk of postmenopausal breast cancer by half. This applies to both surgical and lifestyle-induced weight loss.
GoodSupportsHIGH confidence
cohort studies have shown that breast cancer risk was lowered by 50% in women who intentionally underwent weight loss higher than 10 kg after menopause... the Swedish Obese Subjects (SOS) study... reported a significant reduction in cancer incidence in association with substantial weight loss on a follow-up longer than 10 years
Why this rating
Supported by prospective cohort studies (SOS study) and case-control studies, though long-term follow-up is required.
Source
Obesity as a Major Risk Factor for Cancer
Giovanni De Pergola et al. · Journal of Obesity · 2013
DOI 10.1155/2013/291546
narrative_reviewCited 951×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Obesity is a major risk factor for cancer, accounting for approximately 20% of all malignancies, with the strongest evidence linking it to endometrial, esophageal adenocarcinoma, colorectal, postmenopausal breast, prostate, and renal cancers.Strong
- Hyperinsulinemia and elevated Insulin-like Growth Factor-I (IGF-I) levels, driven by obesity and insulin resistance, promote cancer cell growth, proliferation, and metastasis.Strong
- Adipokines, specifically leptin and adiponectin, play opposing roles in cancer development, with leptin promoting tumor growth and adiponectin offering protection.Good
Related findings · Energy balance
- Achieving a total body weight loss of 10-15% (or >10-15 kg) through Total Diet Replacement (TDR) induces remission of Type 2 Diabetes in individuals with short-duration disease.Strong
- Bariatric surgery is superior to medical management alone for inducing significant long-term weight loss, remission of type 2 diabetes, and reduction in mortality for patients with BMI ≥ 40 or ≥ 35 with comorbidities.Strong
- Achieving type 2 diabetes remission requires significant weight loss (≥15 kg) via major caloric restriction, independent of macronutrient composition.Strong
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →