In yet another study in the same journal, researchers found that dietary fiber intake reduced the risk of breast cancer, confirming previous research. That study, the National Institutes of Health--AARP Diet and Health Study, looked at the intake of fiber to breast cancer among more than 185,000 postmenopausal women, with an average age of 62.
The researchers found 5,461 cases of breast cancer during an average of seven years of follow-up. Those who ate the most dietary fiber -- 26 grams a day -- had about a 13 percent reduction in risk of breast cancer compared to those who ate the least, just 11 grams a day.
An intake of 25 grams a day of fiber is considered adequate for adult women.
There's more on risk factors for breast cancer at the American Cancer Society.
SOURCES: Eleni Linos, M.D., Dr.P.H., epidemiologist, Stanford University Medical Center, Redwood City, Calif.; Connie Diekman, R.D., director, university nutrition, Washington University, St. Louis; September 2009 The American Journal of Clinical Nutrition