Journal of the National Cancer Institute
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J. Natl. Cancer Inst. · Nov 2002
Randomized Controlled Trial Clinical TrialBaseline dietary fiber intake and colorectal adenoma recurrence in the wheat bran fiber randomized trial.
The Wheat Bran Fiber (WBF) trial was a double-blind, high-fiber versus low-fiber phase III intervention trial in which participants were randomly assigned to receive a cereal fiber supplement of either 2.0 g/day or 13.5 g/day to assess whether a high-fiber supplement could decrease risk of recurrent colorectal adenomas. Although no effect of the supplement on polyp recurrence was observed, participants consumed a baseline average of 17.5 grams of fiber per day, which may have been sufficient to protect against adenoma recurrence. Therefore, we examined whether baseline fiber intake affected colorectal adenoma recurrence or modified the effect of treatment group in the WBF trial participants. ⋯ No association was found between amount of fiber consumed at baseline and adenoma recurrence in the WBF trial participants. The baseline fiber intake, whether considered as a whole or from specific sources, did not modify the effect of treatment group.