In general, most previous studies have been inconsistent.

It's still important to eat a high-fiber diet. Even though our study didn't find a reduction for colorectal cancer, other studies show that high-fiber diets reduce the risk of heart disease and diabetes.

People who eat high fiber tend to have a healthier lifestyle and a more healthy diet. Those things together may reduce the risk of colon cancer.

There is still a controversy. We need to look into more specifics, like the types of fibers people eat, the sources of fiber and whether people with certain characteristics may have some benefit.