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JNCI Journal of the National Cancer Institute 1999 91(6):496-497; doi:10.1093/jnci/91.6.496
© 1999 by Oxford University Press
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Journal of the National Cancer Institute, Vol. 91, No. 6, 496-497, March 17, 1999
© 1999 Oxford University Press

NEWS

Beans and Bran — Fiber Data Come Under Fire

Nancy Volkers

Most people consider fiber to be part of a healthy diet; some believe it also protects against colon cancer. But fiber's protective effect has yet to be substantiated, and some researchers now think it's time to admit that fiber does not protect against colon cancer. Others say that published studies aren't rigorous enough and only clinical trials can provide satisfactory answers.

"The hypothesis that fiber intake is important in reducing colon cancer risk was interesting, but the reality is that the data have not provided much support for that," said Walter Willett, M.D., Dr.P.H., professor of epidemiology and nutrition at the Harvard School of Public Health, Boston.



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