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Strong Support

People who consume more dietary fiber have a slightly lower likelihood of developing a specific subtype of colorectal cancer that follows a well-defined progression from benign polyps to malignant tumors, according to observational data.

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Evidence from Studies

Supporting (1)

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Intake of dietary fruit, vegetables, and fiber and risk of colorectal cancer according to molecular subtypes: A pooled analysis of 9 studies

Systematic Review With Meta-Analysis
Human
2020 Oct 15

Eating more fiber is linked to a lower chance of getting a common type of colon cancer that grows slowly and doesn't have certain genetic mutations. This helps explain why some studies found fiber helps prevent colon cancer and others didn't.

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No contradicting evidence found

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According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Intake of dietary fruit, vegetables, and fiber and risk of colorectal cancer according to molecular subtypes: A pooled analysis of 9 studies

Score: 55
DOI: 10.1158/0008-5472.CAN-20-0168

Similar Assertions

People who consume more dietary fiber may have a lower risk of developing colorectal cancer, particularly when the cancer develops through the traditional adenoma-carcinoma pathway, compared to other pathways, but this difference is not large enough to be considered statistically reliable.

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86%

People who consume more dietary fiber relative to their total energy intake have a lower likelihood of developing colorectal cancer.

60
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79%

Adults who consume more dietary fiber, based on detailed food records, have a lower statistical likelihood of developing colorectal cancer compared to those with the lowest fiber intake, even after accounting for other lifestyle and dietary factors.

55
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77%

Eating more fiber in your diet might help lower your chances of getting cancer overall, according to a big review of past studies.

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75%

Eating more fiber might lower your chances of getting cancers in your stomach or intestines, according to a big review of past studies.

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74%