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Last Updated: Apr 16, 2008 - 5:52:06 PM |
TUESDAY April 15, 2008 (foodconsumer.org) -- A new study published in the Jan. 15, 2008 issue of International Journal of Cancer suggested that high intake of dietary fiber from fruit and cereal may help reduce breast cancer risk.
The study led by Suzuki R and colleagues from Karolinska Institute in Stockholm, Sweden sought to establish an association between dietary fiber intake and estrogen receptor(ER) /progesterone receptor(PR)-defined breast cancer risk.
For the study, the researchers followed 51,823 postmenopausal women participating in the population-based Swedish Mammography Screening Cohort for an average of 8.3 years. Dietary habits were surveyed in 1987 and 1997.
During the follow-up, 1,188 breast cancer cases with know ER/PR status were identified.
Comparing the highest to the lowest quintile, those who had the highest intake of dietary fiber were 15 percent less likely to develop a breast cancer of any type. A similar risk reduction was found in the ER+/PR+ and ER+/PR- tumors. But for ER-/PR- tumor, the risk reduction was 6 percent.
The fiber source made a difference in the reduction in breast cancer risk. The highest intake of fiber from fruits were associated with a 34 percent reduced risk of breast cancer of any type and for ER+/PR+ tumor, the reduction was 38 percent.
The fiber effect was found particularly significant among those who ever used postmenopausal hormone. Among these women, the total fiber intake and particularly cereal fiber were statistically significantly associated with about 50 percent reduced risk for overall and ER+/PR+ tumors when comparing the highest to the lowest quartile. But the association was not found among those who never used hormone.
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