Higher dietary fiber intake density (grams per megajoule of energy) is associated with a 34% lower odds of developing colorectal cancer.

Study: Dietary fiber and colorectal cancer risk: a nested case-control study using food diaries.

People who ate more fiber relative to how much food they ate were much less likely to get colon cancer, according to a careful study that tracked what people actually ate.

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

Eating more fiber-rich foods like fruits, veggies, and whole grains is linked to a lower chance of getting colon cancer, especially for the most common type of this cancer. This study helps explain why some past studies seemed mixed — fiber helps, but not equally for all cancer types.

Study: Global, regional, and national burden of disease associated with low-fiber dietary patterns for colorectal cancer from 1990 to 2021: A systematic analysis for the global burden of disease 2021

People who eat more fiber are less likely to get colon cancer, and this big study found that low-fiber diets are linked to more cases of colon cancer around the world.