Recent studies have cast doubt on the claim that dietary fiber reduces the risk of colon cancer.

Some studies seem to show that insoluble fiber can reduce the risk of colon cancer.

But those that have showed that dietary fiber does not reduce prostate cancer risk.

For example, a high-sodium, high-fiber soup might have a label stating that fiber reduces the risk of cancer.

He also said more than 50 other studies suggested that soluble fiber of different kinds reduced cholesterol.

Experts are still debating exactly how fiber might reduce colorectal cancer risk.

One possibility is that the fiber may reduce risk by reducing the "transit time" of food products in the digestive tract.

The fiber found in whole grains reduces your risk of colon cancer.

There is general agreement that foods containing soluble fiber reduce cholesterol.

Indeed, some fibers actually reduce the strength of concrete.