A random-effects meta-analysis of prospective observational studies, published in Cancer, found that high total fiber consumption was correlated with a reduced risk of breast cancer.
Additionally, the results suggested that dietary fiber intake may decrease the risk of both premenopausal and postmenopausal breast cancers.
“The reduction in risk appears to be similar for intake of all sources of fiber (cereal, fruit, vegetable, and legume), although statistical significance was not reached, except for fruit fiber,” the authors wrote. “A high intake of fiber was [also] found to be inversely, but not significantly, associated with ER+/PR+ and ER-/PR- breast cancers.”
Researchers searched the MEDLINE and Excerpta Medica dataBASE (EMBASE) through July 2019 for prospective studies that reported on the association between fiber consumption and incident breast cancer. The pooled…