Lack of effect of a high-fiber cereal supplement on the recurrence of colorectal adenomas

Wheat bran fiber does not appear to prevent the development of colorectal adenomas. Colorectal adenomas can be a precursor to colorectal cancer. Researchers randomly assigned 1,303 people who had a colorectal adenoma removed to follow a diet supplemented with high amounts of wheat bran fiber or low amounts for up to three years. After three years, colonoscopy showed that the rate of recurrence of the adenoma was similar in both groups. About half the people in both groups had a recurrence.