Following a fiber-rich diet reduces the risk of developing certain types of cancer
the verdict
SUPPORTED
the evidence backs this
confidence 62/100
Robust epidemiological, genetic, and mechanistic evidence indicates that following a fiber-rich diet reduces the risk of certain cancers, particularly colorectal cancer, though associations may vary by cancer type.
Evidence for · 7
Low dietary fiber intake as a major risk factor for colorectal cancer: evidence from integrated multidatabase analyses.
2026 · cited by 0
Mendelian randomization analysis demonstrates that higher dietary fiber intake confers a protective effect against colorectal cancer.
Evidence against · 1
Dietary fiber intake and the risk of bladder cancer in the Prostate, Lung, Colorectal and Ovarian (PLCO) cohort
2019 · cited by 14
A large prospective cohort study found no significant association between total, insoluble, or soluble dietary fiber intake and the risk of bladder cancer.
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More for · 6
Global, regional and national burden of colorectal cancer attributable to low-fiber diet from 1990 to 2021: a systematic analysis of the global burden of disease study 2021.
2026 · cited by 0
Global burden of disease studies identify low-fiber diets as a major modifiable risk factor associated with colorectal cancer.
Dietary Fiber, Gut Microbiota, and Chronic Inflammation in Colorectal Cancer Prevention
2026 · cited by 0
Preclinical models and epidemiological data show that higher fiber intake is linked to lower colorectal cancer risk through microbiota-dependent short-chain fatty acid generation.
Gut microbiota and diet in colorectal cancer: Converging determinants of carcinogenesis.
2026 · cited by 0
Mechanistic reviews highlight that fiber-rich diets support protective commensals and anti-inflammatory metabolites that inhibit colorectal carcinogenesis.
Rising dietary risk-attributable mortality from colon and rectum cancer among adults aged 60+ years in Japan: a nationwide study.
2026 · cited by 0
Nationwide data indicate that diets low in fiber and whole grains are leading dietary contributors to colorectal cancer mortality.
The Impact of Diet on Long-Term Oncological Outcomes: Investigating Nutritional Mechanisms in Cancer Prevention Management and Prognosis.
2026 · cited by 0
Comprehensive reviews position fiber-rich, plant-based diets as protective strategies that reduce oxidative and inflammatory loads linked to cancer.
The Nutraceutical Promise of <i>Phaseolus vulgaris</i> L.: Bioactive Compounds for Health Promotion and Prevention of Chronic Noncommunicable Diseases.
2026 · cited by 0
Nutraceutical analyses emphasize that fiber- and vegetable-rich foods provide bioactive compounds that help prevent chronic pathologies, including cancer.